Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating losses	$ 35,430	$ 38,746
Foreign tax credits	8,836	8,330
Accruals not currently deductible	2,989	4,393
Unrealized foreign exchange losses, net	5,353	4,590
Research and development credits	5,181	4,695
Stock-based compensation	1,359	1,856
Capitalized inventory costs	1,821	1,706
Capitalized research and development expenditures	4,342	0
Other	6,551	5,839
Total deferred tax assets	71,862	70,155
Valuation allowance	(47,280)	(38,406)
Total deferred tax assets, net of allowances	24,582	31,749
Deferred tax liabilities:
Accelerated depreciation and amortization	(24,099)	(31,816)
Tax on unremitted earnings	(5,656)	(8,214)
Other	(673)	(1,222)
Total deferred tax liabilities	(30,428)	(41,252)
Net deferred tax liabilities	(5,846)	(9,503)
Noncurrent deferred tax assets	2,275	2,316	$ 3,659	$ 3,600
Noncurrent deferred tax liabilities	$ (8,121)	$ (11,819)	$ (34,082)	$ (34,247)