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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2019
Income Tax Disclosure [Abstract] |
Summary of components of income before income taxes |
|  | Year Ended
|  | December 31,
|  | 2018 |  | 2019
Domestic |  | $ | 56,426 |  | $ | 61,691
International |  |  | 56,436 |  |  | 66,418
Income before income taxes |  | $ | 112,862 |  | $ | 128,109
Summary of provision for income taxes |
|  | Year Ended
|  | December 31,
|  | 2018 |  | 2019
Current: |  |  |  |  |  |
Federal |  | $ | 18,634 |  | $ | 7,696
State |  |  | 873 |  |  | 2,486
Foreign |  |  | 11,303 |  |  | 12,824
|  |  | 30,810 |  |  | 23,006
Deferred: |  |  |  |  |  |
Federal |  |  | (7,655) |  |  | 2,389
State |  |  | 508 |  |  | 412
Foreign |  |  | (52,913) |  |  | (2,069)
|  |  | (60,060) |  |  | 732
Provision for income taxes |  | $ | (29,250) |  | $ | 23,738
Summary of reconciliation of the statutory federal income tax rate to the Company's effective income tax rate |
|  | Year Ended |
|  | December 31, |
|  | 2018 |  | 2019 |
Federal statutory rate |  | 21.0 | % | 21.0 | %
State income taxes, net of federal benefit |  | 0.9 |  | 2.0 |
Permanent book/tax differences |  | (0.2) |  | 0.2 |
Stock-based compensation |  | (2.4) |  | (2.3) |
Tax credits |  | (3.3) |  | (3.6) |
Foreign tax rate differential |  | (4.2) |  | (2.8) |
Income tax reserves |  | (0.2) |  | 0.9 |
Intercompany sales of certain operating assets |  | (41.1) |  | — |
Net tax on foreign earnings (GILTI and FDII) |  | — |  | 6.1 |
Other |  | (0.2) |  | (3.0) |
U.S. tax reform |  | 3.8 |  | — |
Effective income tax rate |  | (25.9) | % | 18.5 | %
Summary of deferred tax assets and liabilities |
|  | As of December 31,
|  | 2018 |  | 2019
Deferred tax assets: |  |  |  |  |  |
Compensation accruals and DCP |  | $ | 37,816 |  | $ | 36,195
NOL and credit carryforwards |  |  | 10,013 |  |  | 11,544
Intangible assets including goodwill |  |  | 15,199 |  |  | 10,371
Expenses not currently deductible |  |  | 581 |  |  | 960
Allowance for accounts receivable |  |  | 345 |  |  | 472
Other comprehensive income |  |  | 195 |  |  | 394
Deferred revenue |  |  | 8,185 |  |  | —
Valuation allowance |  |  | (2,082) |  |  | (2,329)
Other |  |  | 615 |  |  | 40
|  |  | 70,867 |  |  | 57,647
Deferred tax liabilities: |  |  |  |  |  |
Deferred revenue |  |  | — |  |  | 12,830
Depreciation |  |  | 240 |  |  | 707
Other |  |  | 31 |  |  | 1,302
|  |  | 271 |  |  | 14,839
Net deferred tax assets |  | $ | 70,596 |  | $ | 42,808
Summary of reconciliation of the total amounts of unrecognized tax benefits |
|  | Year Ended
|  | December 31,
|  | 2018 |  | 2019
Unrecognized tax benefit, beginning of year |  | $ | 872 |  | $ | 638
Additions based on tax positions related to: |  |  |  |  |  |
Prior years |  |  | 80 |  |  | 1,222
Reductions for tax positions related to prior years |  |  | (39) |  |  | (86)
Lapse of statute of limitations |  |  | (275) |  |  | (11)
Unrecognized tax benefit, end of year |  | $ | 638 |  | $ | 1,763

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