Accumulated Other Comprehensive Loss - Components of Changes in Accumulated Other Comprehensive Loss (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 356,864
Ending Balance	362,284
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	1,833
Other comprehensive loss	(1,182)
Ending Balance	651
Neo Medical [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	1,419
Other comprehensive loss	(628)
Income taxes	156
Ending Balance	947
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	3,252
Other comprehensive loss	(1,810)
Income taxes	156
Ending Balance	$ 1,598