ACQUISITIONS RadiaDyne Acquisition On September 21, 2018, the Company acquired RadiaDyne, a privately held medical diagnostic and device company that designs and develops patient dose monitoring technology to improve cancer treatment outcomes. The aggregate purchase price of $75.0 million included an upfront payment of $47.9 million , contingent consideration with an estimated fair value of $22.3 million , an indemnification holdback of $4.6 million and a purchase price holdback of $0.2 million . The fair value of contingent consideration of $22.3 million is comprised of $16.5 million for the revenue milestones and $5.8 million for the technical milestones. The $4.6 million indemnification holdback is recorded in accrued liabilities at May 31, 2019 and the $0.2 million purchase price holdback was initially recorded in accrued liabilities, but was paid during the third quarter of fiscal year 2019. This acquisition expands the Companys growing Oncology business by adding RadiaDynes early-stage, proprietary OARtrac real-time radiation dose monitoring platform and other market-leading oncology solutions, including the IsoLoc/ImmobiLoc and Alatus balloon stabilizing technologies. The Company accounted for the RadiaDyne acquisition under the acquisition method of accounting for business combinations. Accordingly, the cost to acquire the assets was allocated to the underlying net assets in proportion to estimates of their respective fair values. The excess of the purchase price over the estimated fair value of the net assets acquired was recorded as goodwill. Goodwill is deductible for income tax purposes. The Company has not disclosed the amount of revenue and earnings for sales of RadiaDyne products since acquisition, nor proforma information, because these amounts are not significant to the Company's financial statements. Acquisition-related costs associated with the RadiaDyne acquisition, which are included in acquisition, restructuring and other expenses, net in the accompanying consolidated statements of income, were approximately $1.6 million . The following table summarizes the preliminary and revised aggregate purchase price allocated to the net assets acquired: Preliminary allocation Adjustments (1) Revised allocation (in thousands) Accounts receivable $ 900 $  $ 900 Inventory 732  732 Prepaid and other current assets 98  98 Property, plant and equipment 133  133 Intangible assets: RadiaDyne trademark 400  400 OARtrac trademark 200  200 RadiaDyne legacy product technology 1,500  1,500 OARtrac product technology 16,300 2,600 18,900 RadiaDyne customer relationships 3,700 900 4,600 Goodwill 51,482 (3,500 ) 47,982 Total assets acquired $ 75,445 $  $ 75,445 Liabilities assumed Accounts payable $ 352 $  $ 352 Accrued expenses 106  106 Total liabilities assumed $ 458 $  $ 458 Net assets acquired $ 74,987 $  $ 74,987 (1) Measurement period adjustments are recognized on a prospective basis in the period of change, instead of restating prior periods. There was no impact to reported earnings in connection with these measurement period adjustments for the periods presented. Amounts represent adjustments to the preliminary purchase price allocation first presented in the Company's Quarterly Report on Form 10-Q for the quarter ended November 30, 2018 resulting from revising the Company's purchase price allocation for this acquisition. The Company finalized the allocation of the purchase price to the assets acquired and liabilities assumed in the fourth quarter of FY19. The values assigned to the RadiaDyne and OARtrac trademark and product technologies were derived using the relief-from-royalties method under the income approach. This approach is used to estimate the cost savings that accrue for the owner of an intangible asset who would otherwise have to pay royalties or licensing fees on revenues earned through the use of the asset if they had not owned the rights to use the assets. The net after-tax royalty savings are calculated for each year in the remaining economic life of the intangible asset and discounted to present value. The trademarks are deemed to have a useful life of five to seven years and the product technologies are deemed to have a useful life of seven to ten years . Both are amortized on a straight-line basis over their useful life. The value assigned to customer relationships was derived using the multi-period excess earnings method under the income approach. This approach estimates the excess earnings generated over the lives of the customers that existed as of the acquisition date and discounts such earnings to present value. Customer relationships are amortized on a straight-line basis over fifteen years . The goodwill arising from the acquisition consists largely of synergies and economies of scale the Company hopes to achieve from combining the acquired assets with the Company's current operations. BioSentry Acquisition On August 14, 2018, the Company acquired the BioSentry product from Surgical Specialties, LLC (SSC), for an aggregate purchase price of $39.8 million of which $37.0 million was paid on August 14, 2018 and $2.8 million was recorded as contingent consideration. The contingent consideration liability was recorded at fair value and was paid in the fourth quarter of fiscal year 2019 upon fulfillment of hydrogel orders by SSC. The Company accounted for the BioSentry acquisition under the acquisition method of accounting for business combinations. Accordingly, the cost to acquire the assets was allocated to the underlying net assets in proportion to estimates of their respective fair values. The excess of the purchase price over the estimated fair value of the net assets acquired was recorded as goodwill. Goodwill is deductible for income tax purposes. The Company has not disclosed the amount of revenue and earnings for sales of BioSentry products since acquisition, nor proforma information, because these amounts are not significant to the Company's financial statements. Acquisition-related costs associated with the BioSentry acquisition, which are included in acquisition, restructuring and other expenses, net in the accompanying consolidated statements of income, were approximately $1.0 million . The following table summarizes the preliminary and revised aggregate purchase price allocated to the net assets acquired: Preliminary allocation Adjustments (1) Revised allocation (in thousands) Inventory $ 50 $  $ 50 Property, plant and equipment 10  10 Intangible assets: BioSentry trademark 1,700 800 2,500 BioSentry product technology 13,800 7,100 20,900 Customer relationships 2,500 100 2,600 Goodwill 21,740 (8,000 ) 13,740 Net assets acquired $ 39,800 $  $ 39,800 (1) Measurement period adjustments are recognized on a prospective basis in the period of change, instead of restating prior periods. There was no impact to reported earnings in connection with these measurement period adjustments for the periods presented. Amounts represent adjustments to the preliminary purchase price allocation first presented in the Company's Quarterly Report on Form 10-Q for the quarter ended August 31, 2018 resulting from revising the Company's purchase price allocation for this acquisition. The Company finalized the allocation of the purchase price to the assets acquired and liabilities assumed in the fourth quarter of FY19. The values assigned to the BioSentry trademark and product technologies were derived using the relief-from-royalties method under the income approach. This approach is used to estimate the cost savings that accrue for the owner of an intangible asset who would otherwise have to pay royalties or licensing fees on revenues earned through the use of the asset if they had not owned the rights to use the assets. The net after-tax royalty savings are calculated for each year in the remaining economic life of the intangible asset and discounted to present value. The trademark and product technologies are deemed to have a fifteen year useful life and are amortized on a straight-line basis over their useful life. The value assigned to customer relationships was derived using the multi-period excess earnings method under the income approach. This approach estimates the excess earnings generated over the lives of the customers that existed as of the acquisition date and discounts such earnings to present value. Customer relationships are amortized on a straight-line basis over ten years . The goodwill arising from the acquisition consists largely of synergies and economies of scale the Company hopes to achieve from combining the acquired assets with the Company's current operations.