3. Business Combinations YourCause acquisition On January 2, 2019 , we acquired all of the outstanding equity securities, including all voting equity interests, of YourCause Holdings, LLC, a Delaware limited liability company ("YourCause"), pursuant to a purchase agreement and plan of merger. The acquisition expands our footprint in corporate social responsibility and employee engagement and enhances our position as a leader in providing solutions to both nonprofit organizations and for-profit companies committed to addressing social issues. We acquired the equity securities for an aggregate purchase price of $157.7 million in cash, subject to certain adjustments set forth in the agreement and plan of merger. The purchase price and related expenses were funded primarily through borrowings under the 2017 Credit Facility (as defined below). As a result of the acquisition, YourCause has become a wholly owned subsidiary of ours. The operating results of YourCause have been included in our consolidated financial statements from the date of acquisition. During the three and six months ended June 30, 2019 , we incurred insignificant acquisition-related expenses associated with the acquisition, which were recorded in general and administrative expense. The fair values assigned to the assets acquired and liabilities assumed in the table below are based on our best estimates and assumptions as of the reporting date and are considered preliminary pending finalization. The estimates and assumptions are subject to change as we obtain additional information during the measurement period, which may be up to one year from the acquisition date. The assets and liabilities, pending finalization, include the valuation of intangible assets as well as the assumed deferred revenue and deferred income tax balances. (in thousands) Purchase price allocation Net working capital, excluding deferred revenue $ 3,576 Other long-term assets 2,574 Identifiable intangible assets 74,690 Deferred tax liability (4,615 ) Deferred revenue (4,300 ) Other long-term liabilities (1,650 ) Goodwill 87,473 Total purchase price $ 157,748 The estimated fair value of accounts receivable acquired approximates the contractual value of $4.1 million and $54.7 million of the goodwill arising in the acquisition is deductible for income tax purposes. The estimated goodwill recognized is attributable primarily to the opportunities for expected synergies from combining the operations and assembled workforce of YourCause. During the six months ended June 30, 2019 , we recorded an insignificant measurement period adjustment to the estimated fair value of the YourCause assets acquired and liabilities assumed following the receipt of new information. The adjustment resulted in an increase to net working capital, excluding deferred revenue, with the corresponding offset to goodwill. The YourCause acquisition resulted in the identification of the following identifiable intangible assets: Intangible assets acquired Weighted average amortization period YourCause (in thousands) (in years) Acquired technology $ 47,800 12 Customer relationships 25,900 15 Marketing assets 830 2 Non-compete agreements 160 0 Total intangible assets $ 74,690 13 The estimated fair values of the intangible assets were based on variations of the income approach, which estimates fair value based upon the present value of cash flows that the assets are expected to generate, and which included the relief-from-royalty method, incremental cash flow method, including the comparative (with and without) method and multi-period excess earnings method, depending on the intangible asset being valued. The method of amortization of identifiable finite-lived intangible assets is based on the expected pattern in which the estimated economic benefits of the respective assets are consumed or otherwise used up. Customer relationships and acquired technology assets are being amortized on an accelerated basis. Marketing assets are being amortized on a straight-line basis. The non-compete agreements were fully amortized as of March 31, 2019, based on the insignificance of the acquired assets. We determined that the impact of this acquisition was not material to our consolidated financial statements; therefore, separate presentation of revenue and earnings since the acquisition date and pro forma information are not required nor included herein.