Other Long-Term Liabilities- New Jersey tax benefits (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2015	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investment and other income		$ 505	$ 2,407	$ 4,153
New Jersey tax benefits
Amount of tax benefit	$ 9,800
Proceeds from sale of tax credits	$ 9,200
Base of operations requirement (in years)		5 years
Investment and other income		$ 0	$ 1,800	$ 2,400