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Certain Balance Sheet Accounts (Tables) | 12 Months Ended
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Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Summary of Property and Equipment | Property and equipment as of December 31, 2017 and 2016 is recorded at cost less accumulated depreciation and consists of the following (in thousands):
| 2017 |  |  | 2016 |
Computers and equipment | $ | 18,570 |  |  | $ | 17,137 |
Computer software |  | 29,891 |  |  |  | 26,686 |
Furniture and fixtures |  | 9,094 |  |  |  | 8,471 |
Leasehold improvements |  | 26,650 |  |  |  | 25,204 |
Total property and equipment |  | 84,205 |  |  |  | 77,498 |
Less accumulated depreciation |  | 58,956 |  |  |  | 53,604 |
Total | $ | 25,249 |  |  | $ | 23,894 |
Summary of Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities as of December 31, 2017 and 2016 consist of the following (in thousands):
| 2017 |  |  | 2016 |
Payroll and related benefits | $ | 34,809 |  |  | $ | 28,681 |
Taxes |  | 3,912 |  |  |  | 4,704 |
Other |  | 10,908 |  |  |  | 8,018 |
Total | $ | 49,629 |  |  | $ | 41,403 |
Summary of Allowance for Doubtful Accounts | A roll-forward of the allowance for doubtful accounts as of and for the years ended December 31, 2017, 2016, and 2015 is as follows (in thousands):
| 2017 |  |  | 2016 |  |  | 2015 |
Balance, beginning of year | $ | 140 |  |  | $ | 153 |  |  | $ | 188 |
Provision for doubtful accounts |  | 331 |  |  |  | 150 |  |  |  | 106 |
Write-offs |  | (316 | ) |  |  | (163 | ) |  |  | (141 | )
Balance, end of year | $ | 155 |  |  | $ | 140 |  |  | $ | 153 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses. + References No definition available. + Details
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