we believe that sophisticated clients ( which also include property owners ) recognize the potential for parking services , parking management , ground transportation services , baggage handling services , technology-driven mobility solutions and other ancillary services to be a profit generator and or a service differentiator to their customers . by outsourcing these services , they are able to capture additional profit and improve customer experiences by leveraging the unique operational skills and controls that an experienced services company can offer . our ability to consistently deliver a uniformly high level of services to our clients , including the use of various technological enhancements , allows us to maximize the profit and or customer experience to our clients and improves our ability to win contracts and retain existing clients . our focus on customer service and satisfaction is a key driver of our high retention rate , which was approximately 87 % and 93 % for the years ended december 31 , 2020 and 2019 , respectively , for the commercial segment . commercial segment facilities in order to mitigate some of the effects from the covid-19 pandemic ( “ covid-19 ” ) , we converted many of our lease locations to management locations during the year ended december 31 , 2020. in addition , we were able to exit many less profitable contracts , which were for both lease and management locations . the following table reflects our commercial facilities ( by contractual type ) operated at the end of the years indicated : replace_table_token_2_th revenue we recognize services revenue from our contracts as the related services are provided . substantially all of our revenue comes from the following two sources : lease type contracts . consists of all revenue received at lease type locations , including gross receipts ( net of local taxes ) , consulting and real estate development fees , gains on sales of contracts and payments for exercising termination rights . revenue from lease type contracts includes a reduction for service concessions . management type contracts . consists of management fees , including fixed , variable and or performance-based fees , and amounts attributable to ancillary services such as accounting , equipment leasing , baggage services , payments received for exercising termination rights , consulting , developmental fees , gains on sales of contracts , insurance and other value-added services . we believe we generally can purchase required insurance at lower rates than our clients can obtain on their own because we effectively self-insure for all liability , worker 's compensation and health care claims by maintaining a large per-claim deductible . as a result , we have generated operating income on the insurance provided under our management type contracts by focusing on our risk management efforts and controlling losses . management type contract revenues do not include gross customer collections at those facilities , as those revenues belong to the client rather than to us . management type contracts generally provide us with a management fee regardless of the operating performance of the underlying management type contract . reimbursed management type contract revenue . c onsists of the direct reimbursement from the client for operating expenses incurred under a management type contract , which are reflected in our revenue . 20 cost of services our cost of services consists of the following : lease type contracts . consists of contractual rents or fees paid to the client and all operating expenses incurred in connection with operating the leased facility . contractual rents or fees paid to the client are generally based on either a fixed contractual amount , a percentage of gross revenue or a combination thereof . generally , under a lease type arrangement we are not responsible for major capital expenditures or real estate taxes . management type contracts . cost of services under a management type contract is generally the responsibility of the client . as a result , these costs are not included in our results of operations . however , our reverse management type contracts , which typically provide for larger management fees , do require us to pay for certain costs and those costs are included in our results of operations . reimbursed management type contract expense . c onsists of directly reimbursed costs incurred on behalf of a client under a management type contract , which are reflected in our cost of services . gross profit gross profit equals our revenue less the cost of generating such revenue . this is the key metric we use to examine our performance because it captures the underlying economic benefit to us of both lease and management type contracts . general and administrative expenses general and administrative expenses include salaries , wages , payroll taxes , insurance , travel and office related expenses for our headquarters , field offices , supervisory employees , and board of directors . depreciation and amortization depreciation is determined using a straight-line method over the estimated useful lives of the various asset classes , or in the case of leasehold improvements , over the initial term of the operating lease or its useful life , whichever is shorter . intangible assets determined to have finite lives are amortized over their remaining estimated useful lives . goodwill goodwill represents the excess of purchase price paid over the fair value of net assets acquired . in accordance with the financial accounting standards board 's ( `` fasb `` ) authoritative accounting guidance on goodwill , we evaluate goodwill for impairment on an annual basis , or more often if events or circumstances change that could cause goodwill to become impaired . we have elected to assess the impairment of goodwill annually on october 1 or at an interim date if there is an event or change in circumstances indicating the carrying value may not be recoverable . story_separator_special_tag gross profit decreased $ 39.9 million , or 135.3 % , to a loss of $ 10.4 million for the year ended december 31 , 2020 , compared to gross profit of $ 29.5 million for the year ended december 31 , 2019. gross profit percentage decreased to negative 5.8 % for the year ended december 31 , 2020 , compared to 7.8 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in existing business , expired business , locations that converted to management type contracts in the periods presented and new/acquired business . gross profit for existing business decreased $ 24.4 million , or 95.3 % , primarily due to decreases in transient revenue as a result of covid-19 , partially offset by the recognition of certain rent concessions of $ 30.1 million , as well as decreases in variable rent , compensation , benefits and overall lower net operating costs . 24 management type contracts . gross profit decreased $ 24.0 million , or 23.1 % , to $ 80.1 million for the year ended december 31 , 2020 , compared to $ 104.1 million for the year ended december 31 , 2019. gross profit percentage decreased to 37.8 % for the year ended december 31 , 2020 , compared to 39.3 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in expired business and existing business , partially offset by increases in new/acquired business and locations that converted from lease type contracts during the periods presented . gross profit for existing business decreased $ 13.8 million , or 17.4 % , primarily due to a decrease in activity for volume based management type contracts as a result of covid-19 , partially offset by a decrease in compensation , benefits and overall lower net operating costs . aviation segment : services revenue lease type contracts . lease type contract revenue decreased $ 22.1 million , or 72.0 % , to $ 8.6 million for the year ended december 31 , 2020 , compared to $ 30.7 million for the year ended december 31 , 2019. existing business revenue decreased $ 9.8 million , or 71.5 % , primarily due to a decrease in transient revenue as a result of covid-19 . revenue from other business decreased by $ 12.3 million , or 72.4 % , primarily due to decreases of $ 10.2 million from locations that converted to management type contracts during the periods presented , $ 1.2 million from new/acquired business and $ 0.9 million from expired business . management type contracts . management type contract revenue decreased $ 111.3 million , or 44.2 % , to $ 140.5 million for the year ended december 31 , 2020 , compared to $ 251.8 million for the year ended december 31 , 2019. existing business decreased by $ 92.7 million , or 44.8 % , primarily due to a decrease in activity for volume based management type contracts as a result of covid-19 , partially offset by $ 5.6 million of termination fees received related to certain terminated contracts . revenue from other business decreased by $ 18.6 million , or 41.5 % , primarily due to a decrease of $ 14.4 million from expired business and $ 4.8 million from new/acquired business , partially offset by an increase of $ 0.6 million from locations that converted from lease type contracts during the periods presented . aviation segment : gross profit 25 lease type contracts . gross profit decreased $ 7.5 million , or 91.5 % , to $ 0.7 million for the year ended december 31 , 2020 , compared to $ 8.2 million for the year ended december 31 , 2019. gross profit percentage decreased to 8.1 % for the year ended december 31 , 2020 , compared to 26.7 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in existing business , locations that converted to management type contracts in the periods presented and new/acquired business , partially offset by increases in expired business . gross profit for existing business decreased $ 3.9 million , or 78.0 % , primarily due to declines in transient revenue as a result of covid-19 , partially offset by the recognition of certain concessions of $ 27.1 million , as well as a decrease in variable rent and overall net operating costs . management type contracts . gross profit for management type contracts decreased $ 26.3 million , or 39.7 % , to $ 39.9 million for the year ended december 31 , 2020 , compared to $ 66.2 million for the year ended december 31 , 2019. gross profit percentage increased to 28.4 % for the year ended december 31 , 2020 , compared to 26.3 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in existing business , expired business and new/acquired business , partially offset by an increase in locations that converted from lease type contracts in the periods presented . gross profit for existing business decreased $ 20.6 million , or 36.8 % , primarily due to decreases in activity for volume based management type contracts as a result of covid-19 , partially offset by decreases in overall net operating costs and $ 5.6 million of termination fees received related to certain terminated contacts . “ other ” segment `` other `` consists of ancillary revenue and costs that are not specifically identifiable to commercial or aviation and certain unallocated items , such as and including prior year insurance reserve adjustments/costs and other corporate items . total service revenue in “ other ” decreased $ 2.9 million , or 27.6 % , to $ 7.6 million for the year ended december 31 , 2020 , compared to $ 10.5 million for the year ended december 31 , 2019. gross profit for “ other

cash and cash equivalents we had cash and cash equivalents of $ 13.9 million and $ 24.1 million at december 31 , 2020 and 2019 , respectively . the cash balances reflect our ability to utilize funds deposited into our bank accounts . availability , timing of deposits and the subsequent movement of cash into our corporate bank accounts may result in significant changes to our cash balances . 31 summary of cash flows our primary sources of liquidity are cash flows from operating activities and availability under our senior credit facility . our cash flows for the years ended december 31 , 2020 , 2019 and 2018 were as follows : replace_table_token_6_th operating activities net cash provided by operating activities decreased $ 35.8 million to $ 40.2 million during the year ended december 31 , 2020 from $ 76.0 million during the year ended december 31 , 2019. the decrease in net cash provided by operating activities primarily resulted from the impacts of covid-19 , partially offset by lower cash taxes and favorable working capital management . net cash provided by operating activities increased $ 5.1 million to $ 76.0 million during the year ended december 31 , 2019 from $ 70.9 million during the year ended december 31 , 2018. the increase in net cash provided by operating activities primarily resulted from increased revenue , partially offset by higher cash interest .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```cash and cash equivalents we had cash and cash equivalents of $ 13.9 million and $ 24.1 million at december 31 , 2020 and 2019 , respectively . the cash balances reflect our ability to utilize funds deposited into our bank accounts . availability , timing of deposits and the subsequent movement of cash into our corporate bank accounts may result in significant changes to our cash balances . 31 summary of cash flows our primary sources of liquidity are cash flows from operating activities and availability under our senior credit facility . our cash flows for the years ended december 31 , 2020 , 2019 and 2018 were as follows : replace_table_token_6_th operating activities net cash provided by operating activities decreased $ 35.8 million to $ 40.2 million during the year ended december 31 , 2020 from $ 76.0 million during the year ended december 31 , 2019. the decrease in net cash provided by operating activities primarily resulted from the impacts of covid-19 , partially offset by lower cash taxes and favorable working capital management . net cash provided by operating activities increased $ 5.1 million to $ 76.0 million during the year ended december 31 , 2019 from $ 70.9 million during the year ended december 31 , 2018. the increase in net cash provided by operating activities primarily resulted from increased revenue , partially offset by higher cash interest .
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 Suspicious Activity Report : we believe that sophisticated clients ( which also include property owners ) recognize the potential for parking services , parking management , ground transportation services , baggage handling services , technology-driven mobility solutions and other ancillary services to be a profit generator and or a service differentiator to their customers . by outsourcing these services , they are able to capture additional profit and improve customer experiences by leveraging the unique operational skills and controls that an experienced services company can offer . our ability to consistently deliver a uniformly high level of services to our clients , including the use of various technological enhancements , allows us to maximize the profit and or customer experience to our clients and improves our ability to win contracts and retain existing clients . our focus on customer service and satisfaction is a key driver of our high retention rate , which was approximately 87 % and 93 % for the years ended december 31 , 2020 and 2019 , respectively , for the commercial segment . commercial segment facilities in order to mitigate some of the effects from the covid-19 pandemic ( “ covid-19 ” ) , we converted many of our lease locations to management locations during the year ended december 31 , 2020. in addition , we were able to exit many less profitable contracts , which were for both lease and management locations . the following table reflects our commercial facilities ( by contractual type ) operated at the end of the years indicated : replace_table_token_2_th revenue we recognize services revenue from our contracts as the related services are provided . substantially all of our revenue comes from the following two sources : lease type contracts . consists of all revenue received at lease type locations , including gross receipts ( net of local taxes ) , consulting and real estate development fees , gains on sales of contracts and payments for exercising termination rights . revenue from lease type contracts includes a reduction for service concessions . management type contracts . consists of management fees , including fixed , variable and or performance-based fees , and amounts attributable to ancillary services such as accounting , equipment leasing , baggage services , payments received for exercising termination rights , consulting , developmental fees , gains on sales of contracts , insurance and other value-added services . we believe we generally can purchase required insurance at lower rates than our clients can obtain on their own because we effectively self-insure for all liability , worker 's compensation and health care claims by maintaining a large per-claim deductible . as a result , we have generated operating income on the insurance provided under our management type contracts by focusing on our risk management efforts and controlling losses . management type contract revenues do not include gross customer collections at those facilities , as those revenues belong to the client rather than to us . management type contracts generally provide us with a management fee regardless of the operating performance of the underlying management type contract . reimbursed management type contract revenue . c onsists of the direct reimbursement from the client for operating expenses incurred under a management type contract , which are reflected in our revenue . 20 cost of services our cost of services consists of the following : lease type contracts . consists of contractual rents or fees paid to the client and all operating expenses incurred in connection with operating the leased facility . contractual rents or fees paid to the client are generally based on either a fixed contractual amount , a percentage of gross revenue or a combination thereof . generally , under a lease type arrangement we are not responsible for major capital expenditures or real estate taxes . management type contracts . cost of services under a management type contract is generally the responsibility of the client . as a result , these costs are not included in our results of operations . however , our reverse management type contracts , which typically provide for larger management fees , do require us to pay for certain costs and those costs are included in our results of operations . reimbursed management type contract expense . c onsists of directly reimbursed costs incurred on behalf of a client under a management type contract , which are reflected in our cost of services . gross profit gross profit equals our revenue less the cost of generating such revenue . this is the key metric we use to examine our performance because it captures the underlying economic benefit to us of both lease and management type contracts . general and administrative expenses general and administrative expenses include salaries , wages , payroll taxes , insurance , travel and office related expenses for our headquarters , field offices , supervisory employees , and board of directors . depreciation and amortization depreciation is determined using a straight-line method over the estimated useful lives of the various asset classes , or in the case of leasehold improvements , over the initial term of the operating lease or its useful life , whichever is shorter . intangible assets determined to have finite lives are amortized over their remaining estimated useful lives . goodwill goodwill represents the excess of purchase price paid over the fair value of net assets acquired . in accordance with the financial accounting standards board 's ( `` fasb `` ) authoritative accounting guidance on goodwill , we evaluate goodwill for impairment on an annual basis , or more often if events or circumstances change that could cause goodwill to become impaired . we have elected to assess the impairment of goodwill annually on october 1 or at an interim date if there is an event or change in circumstances indicating the carrying value may not be recoverable . story_separator_special_tag gross profit decreased $ 39.9 million , or 135.3 % , to a loss of $ 10.4 million for the year ended december 31 , 2020 , compared to gross profit of $ 29.5 million for the year ended december 31 , 2019. gross profit percentage decreased to negative 5.8 % for the year ended december 31 , 2020 , compared to 7.8 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in existing business , expired business , locations that converted to management type contracts in the periods presented and new/acquired business . gross profit for existing business decreased $ 24.4 million , or 95.3 % , primarily due to decreases in transient revenue as a result of covid-19 , partially offset by the recognition of certain rent concessions of $ 30.1 million , as well as decreases in variable rent , compensation , benefits and overall lower net operating costs . 24 management type contracts . gross profit decreased $ 24.0 million , or 23.1 % , to $ 80.1 million for the year ended december 31 , 2020 , compared to $ 104.1 million for the year ended december 31 , 2019. gross profit percentage decreased to 37.8 % for the year ended december 31 , 2020 , compared to 39.3 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in expired business and existing business , partially offset by increases in new/acquired business and locations that converted from lease type contracts during the periods presented . gross profit for existing business decreased $ 13.8 million , or 17.4 % , primarily due to a decrease in activity for volume based management type contracts as a result of covid-19 , partially offset by a decrease in compensation , benefits and overall lower net operating costs . aviation segment : services revenue lease type contracts . lease type contract revenue decreased $ 22.1 million , or 72.0 % , to $ 8.6 million for the year ended december 31 , 2020 , compared to $ 30.7 million for the year ended december 31 , 2019. existing business revenue decreased $ 9.8 million , or 71.5 % , primarily due to a decrease in transient revenue as a result of covid-19 . revenue from other business decreased by $ 12.3 million , or 72.4 % , primarily due to decreases of $ 10.2 million from locations that converted to management type contracts during the periods presented , $ 1.2 million from new/acquired business and $ 0.9 million from expired business . management type contracts . management type contract revenue decreased $ 111.3 million , or 44.2 % , to $ 140.5 million for the year ended december 31 , 2020 , compared to $ 251.8 million for the year ended december 31 , 2019. existing business decreased by $ 92.7 million , or 44.8 % , primarily due to a decrease in activity for volume based management type contracts as a result of covid-19 , partially offset by $ 5.6 million of termination fees received related to certain terminated contracts . revenue from other business decreased by $ 18.6 million , or 41.5 % , primarily due to a decrease of $ 14.4 million from expired business and $ 4.8 million from new/acquired business , partially offset by an increase of $ 0.6 million from locations that converted from lease type contracts during the periods presented . aviation segment : gross profit 25 lease type contracts . gross profit decreased $ 7.5 million , or 91.5 % , to $ 0.7 million for the year ended december 31 , 2020 , compared to $ 8.2 million for the year ended december 31 , 2019. gross profit percentage decreased to 8.1 % for the year ended december 31 , 2020 , compared to 26.7 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in existing business , locations that converted to management type contracts in the periods presented and new/acquired business , partially offset by increases in expired business . gross profit for existing business decreased $ 3.9 million , or 78.0 % , primarily due to declines in transient revenue as a result of covid-19 , partially offset by the recognition of certain concessions of $ 27.1 million , as well as a decrease in variable rent and overall net operating costs . management type contracts . gross profit for management type contracts decreased $ 26.3 million , or 39.7 % , to $ 39.9 million for the year ended december 31 , 2020 , compared to $ 66.2 million for the year ended december 31 , 2019. gross profit percentage increased to 28.4 % for the year ended december 31 , 2020 , compared to 26.3 % for the year ended december 31 , 2019. gross profit decreased as a result of declines in existing business , expired business and new/acquired business , partially offset by an increase in locations that converted from lease type contracts in the periods presented . gross profit for existing business decreased $ 20.6 million , or 36.8 % , primarily due to decreases in activity for volume based management type contracts as a result of covid-19 , partially offset by decreases in overall net operating costs and $ 5.6 million of termination fees received related to certain terminated contacts . “ other ” segment `` other `` consists of ancillary revenue and costs that are not specifically identifiable to commercial or aviation and certain unallocated items , such as and including prior year insurance reserve adjustments/costs and other corporate items . total service revenue in “ other ” decreased $ 2.9 million , or 27.6 % , to $ 7.6 million for the year ended december 31 , 2020 , compared to $ 10.5 million for the year ended december 31 , 2019. gross profit for “ other

