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Nature of Business and Summary of Significant Accounting Policies - Components of Other Current Assets and Other Current Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Nature Of Business And Summary Of Significant Accounting Policies [Line Items] |  |
Other | $ 8,755 | $ 8,319
Total other current assets | 33,578 | 21,637
Settlement payables | 24,016 | 11,250
Accrued interest | 7,356 | 7,501
Vendor financed licenses | 9,213 | 15,723
Royalties payable | 7,197 | 4,910
Other | 31,059 | 35,841
Total other current liabilities | 78,841 | 75,225
Settlement deposits [Member] |  |
Nature Of Business And Summary Of Significant Accounting Policies [Line Items] |  |
Other assets settlement | 10,496 | 5,357
Settlement receivables [Member] |  |
Nature Of Business And Summary Of Significant Accounting Policies [Line Items] |  |
Other assets settlement | $ 14,327 | $ 7,961

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