Income Taxes - Income Before Tax by Jurisdiction (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax [Line Items]
Income before income taxes	$ 19,589	$ 64,787	$ 14,113
U.S.
Income Tax [Line Items]
Income before income taxes	5,881	38,254	(20,066)
Non-U.S.
Income Tax [Line Items]
Income before income taxes	$ 13,708	$ 26,533	$ 34,179