14. ACQUISITION On April 1, 2011, we acquired all of the outstanding equity of eDiag, a privately held company based in Seoul, Korea. eDiag complements our OnPulse offerings by providing a portfolio of software solutions for lithography source performance data mining and analytics. Combining our current fault monitoring, predictive techniques and worldwide service infrastructure with eDiag's data analysis capabilities, we plan to continue to drive increased operational efficiency and support improved availability for our customers' light sources. We acquired eDiag for consideration totaling $ 15.0 million payable in cash, with $ 6.0 million paid on April 1, 2011 and $ 3.0 million payable on each of April 1, 2012, 2013 and 2014. There was no debt assumed with the acquisition. Additionally, we entered into a services agreement with the president and previous majority stockholder of eDiag that pays him $ 2.5 million on April 1, 2015 and $ 2.5 million on April 1, 2016, if he continues his employment with us through those dates. The payments under the services agreement will be recorded as bonus expense over the respective service periods. The following table summarizes the purchase price and the estimated fair value of the assets acquired and liabilities assumed at the date of acquisition (in thousands): Purchase price paid as: Cash paid at closing, net of cash acquired $ 3,785 Present value of future cash payments 8,073 Total purchase price 11,858 Fair value of net assets acquired: Current assets $ 232 Identifiable intangible assets - developed technology 3,692 Property and equipment 926 Other assets 438 Current liabilities (766) Other liabilities (1,147) Total fair value of net assets acquired 3,375 Excess purchase price over fair value of net assets acquired ("goodwill") $ 8,483 Under the purchase method of accounting, the purchase price as shown in the table above is allocated to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The excess purch