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Nature of Business and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Receivables and Concentration of Credit Risk | Receivables and Concentration of Credit Risk. Receivables represent amounts billed and amounts earned that are to be billed in the near future. Included in accrued receivables are services and SaaS and Platform revenues earned in the current period but billed in the following period.
|  | December 31, |
|  | 2017 |  |  | 2016 |
Billed Receivables |  | $ | 240,137 |  |  | $ | 250,116 |
Allowance for doubtful accounts |  |  | (4,799 | ) |  |  | (3,873 | )
Billed, net |  |  | 235,338 |  |  |  | 246,243 |
Accrued Receivables |  |  | 27,507 |  |  |  | 21,919 |
Receivables, net |  | $ | 262,845 |  |  | $ | 268,162 |
Activity in Allowance for Doubtful Accounts Receivable | The following reflects activity in the Company’s allowance for doubtful accounts receivable (in thousands):
|  | Years Ended December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Balance, beginning of period |  | $ | (3,873 | ) |  | $ | (5,045 | ) |  | $ | (4,806 | )
Provision increase |  |  | (2,086 | ) |  |  | (1,595 | ) |  |  | (2,425 | )
Amounts written off, net of recoveries |  |  | 1,305 |  |  |  | 2,551 |  |  |  | 2,088 |
Foreign currency translation adjustments and other |  |  | (145 | ) |  |  | 216 |  |  |  | 98 |
Balance, end of period |  | $ | (4,799 | ) |  | $ | (3,873 | ) |  | $ | (5,045 | )
Components of Other Current Assets and Other Current Liabilities | Other Current Assets and Other Current Liabilities
|  | December 31, |
|  | 2017 |  |  | 2016 |
Settlement deposits |  | $ | 22,282 |  |  | $ | 10,496 |
Settlement receivables |  |  | 30,063 |  |  |  | 14,327 |
Other |  |  | 5,781 |  |  |  | 8,755 |
Total other current assets |  | $ | 58,126 |  |  | $ | 33,578 |
|  | December 31, |
|  | 2017 |  |  | 2016 |
Settlement payables |  | $ | 48,953 |  |  | $ | 24,016 |
Accrued interest |  |  | 7,291 |  |  |  | 7,356 |
Vendor financed licenses |  |  | 1,862 |  |  |  | 9,213 |
Royalties payable |  |  | 9,264 |  |  |  | 7,197 |
Other |  |  | 35,534 |  |  |  | 31,059 |
Total other current liabilities |  | $ | 102,904 |  |  | $ | 78,841 |
Property and Equipment Estimated Useful Lives | As of December 31, 2017 and 2016, net property and equipment consisted of the following (in thousands):
|  | Useful Lives |  |  | 2017 |  |  | 2016 |
Computer and office equipment |  |  | 3 to 5 years |  |  | $ | 123,804 |  |  | $ | 105,692 |
Leasehold improvements |  |  | Lesser of useful life of improvement or remaining life of lease |  |  |  | 32,364 |  |  |  | 33,093 |
Furniture and fixtures |  |  | 7 years |  |  |  | 12,158 |  |  |  | 11,145 |
Building and improvements |  |  | 7 - 30 years |  |  |  | 12,651 |  |  |  | 10,391 |
Land |  |  | Non depreciable |  |  |  | 1,785 |  |  |  | 1,785 |
|  |  |  |  |  |  | 182,762 |  |  |  | 162,106 |
Less: accumulated depreciation and amortization |  |  |  | (102,534 | ) |  |  | (83,156 | )
Property and equipment, net |  |  |  |  |  | $ | 80,228 |  |  | $ | 78,950 |

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