Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Net operating loss carry-forwards			$ 300
Operating loss carryforwards, expiration date			2025
Tax credit carry-forwards			$ 5,100
Tax credit carry-forwards deferred tax asset		$ 5,495	4,027	$ 5,495
Tax credit carry-forwards, valuation allowance			1,800
Undistributed earnings and profits			$ 58,200
Provisional estimate of one-time deemed repatriation transition tax	$ 3,300
Deferred tax asset provisional write-down income tax expense benefit	700
Additional tax expense (benefit) on finalization of transition tax		300
Additional tax expense (benefit) on finalization of deferred tax assets				$ (500)
Effective income tax rate from remeasurement of deferred tax assets and liabilities			21.00%	21.00%	35.00%
One-time tax benefit from remeasurement of deferred tax assets and liabilities	1,200
Unrecognized tax benefits	$ 7,419	7,113	$ 11,239	$ 7,113	$ 7,419	$ 6,938
Unrecognized tax benefits which, if recognized, would affect the effective tax rate		5,400	10,200	5,400
Accrued interest and penalties recognized related to unrecognized tax benefits			500	500	$ 300
Accrued interest and penalties		$ 2,100	1,700	$ 2,100
Reasonably possible amount of decrease in unrecognized tax benefit over the next twelve months			$ 3,100
Earliest Tax Year
Income Taxes [Line Items]
Tax credit carry-forwards, expiration dates			2020
Latest Tax Year
Income Taxes [Line Items]
Tax credit carry-forwards, expiration dates			2029
NOL expires in 2025
Income Taxes [Line Items]
Net operating loss carry-forwards			$ 300