Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (Losses) (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 571,245	$ 540,999	$ 577,932	$ 555,959
Other comprehensive income (loss) before reclassifications (net of tax)	(10,761)	16,351	(17,175)	9,138
Amounts reclassified from accumulated other comprehensive income (net of tax)	49	(1,080)	303	(3,948)
Other comprehensive income (loss)	(10,712)	15,271	(16,872)	5,190
Ending balance	563,304	558,425	563,304	558,425
Currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(51,872)	(84,358)	(42,525)	(76,346)
Other comprehensive income (loss) before reclassifications (net of tax)	(11,484)	17,836	(20,831)	9,824
Amounts reclassified from accumulated other comprehensive income (net of tax)	0	0	0	0
Other comprehensive income (loss)	(11,484)	17,836	(20,831)	9,824
Ending balance	(63,356)	(66,522)	(63,356)	(66,522)
Unrealized gain (loss) on cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	449	2,447	(2,496)	4,316
Other comprehensive income (loss) before reclassifications (net of tax)	454	(1,850)	3,387	(1,051)
Amounts reclassified from accumulated other comprehensive income (net of tax)	(58)	(985)	(46)	(3,653)
Other comprehensive income (loss)	396	(2,835)	3,341	(4,704)
Ending balance	845	(388)	845	(388)
Defined benefit plans \| Pension Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(12,509)	(6,956)	(12,844)	(7,253)
Other comprehensive income (loss) before reclassifications (net of tax)	269	365	269	365
Amounts reclassified from accumulated other comprehensive income (net of tax)	154	153	489	450
Other comprehensive income (loss)	423	518	758	815
Ending balance	(12,086)	(6,438)	(12,086)	(6,438)
Defined benefit plans \| Other Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(881)	890	(788)	1,387
Other comprehensive income (loss) before reclassifications (net of tax)	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (net of tax)	(47)	(248)	(140)	(745)
Other comprehensive income (loss)	(47)	(248)	(140)	(745)
Ending balance	(928)	642	(928)	642
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(64,813)	(87,977)	(58,653)	(77,896)
Ending balance	$ (75,525)	$ (72,706)	$ (75,525)	$ (72,706)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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