Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred income tax assets:
Net operating loss carryforwards	$ 16,763	$ 18,826
Tax credits	18,497	37,672
Compensation	15,272	17,133
Deferred revenue	10,168	16,333
Operating lease	10,202	10,236
Capitalized research and development	23,891	0
Other	9,533	9,988
Gross deferred income tax assets	104,326	110,188
Less: valuation allowance	(11,384)	(11,324)
Net deferred income tax assets	92,942	98,864
Deferred income tax liabilities:
Depreciation and amortization	(33,692)	(41,465)
Operating lease right-of-use asset	(8,885)	(8,791)
Unbilled revenue	(9,566)	(15,596)
Withholding tax liability	(27,432)	(18,356)
Total deferred income tax liabilities	(79,575)	(84,208)
Net deferred income taxes	13,367	14,656
Deferred income taxes / liabilities included in the balance sheet are:
Deferred income tax asset – noncurrent	53,738	50,778
Deferred income tax liability – noncurrent	(40,371)	(36,122)
Net deferred income taxes	$ 13,367	$ 14,656