Changes in Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated and Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ 50,790
Ending balance	$ 108,559	$ (136,810)	108,559	$ (136,810)
Foreign Currency Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	5,134	(49,635)	(31,264)	(37,434)
Other comprehensive (loss) income before reclassifications, net of income tax	962	4,014	771	(8,187)
Release of cumulative foreign currency translation adjustment to net loss as a result of disposition of international operations			36,589
Amounts reclassified from accumulated other comprehensive income (loss) to the condensed consolidated statement of operations and comprehensive (loss) income, net of income tax		0	0	0
Net current-period other comprehensive income (loss)	962	4,014	37,360	(8,187)
Ending balance	6,096	(45,621)	6,096	(45,621)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		1,688	1,348	1,700
Other comprehensive (loss) income before reclassifications, net of income tax		59	77	70
Release of cumulative foreign currency translation adjustment to net loss as a result of disposition of international operations			(1,422)
Amounts reclassified from accumulated other comprehensive income (loss) to the condensed consolidated statement of operations and comprehensive (loss) income, net of income tax		25	(3)	(2)
Net current-period other comprehensive income (loss)		84	(1,348)	72
Ending balance	0	1,772	0	1,772
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	5,134	(47,947)	(29,916)	(35,734)
Other comprehensive (loss) income before reclassifications, net of income tax	962	4,073	848	(8,117)
Release of cumulative foreign currency translation adjustment to net loss as a result of disposition of international operations			35,167
Amounts reclassified from accumulated other comprehensive income (loss) to the condensed consolidated statement of operations and comprehensive (loss) income, net of income tax		25	(3)	(2)
Net current-period other comprehensive income (loss)	962	4,098	36,012	(8,115)
Ending balance	$ 6,096	$ (43,849)	$ 6,096	$ (43,849)