Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Long Term Liabilities [Line Items]
Unrecognized tax benefits	$ 3,951	$ 5,908	$ 9,146	$ 9,238
Other Noncurrent Liabilities
Other Long Term Liabilities [Line Items]
Unrecognized tax benefits	5,600	8,700
Long-term notes payable	$ 2,700	$ 5,300