Leases - Supplemental Cash flow Information to operating leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental cash flow information
Cash paid for amounts included in the measurement of operating lease liabilities	$ 8,280	$ 8,736	$ 8,479
Operating ROU assets obtained in exchange for lease liabilities	7,295	1,427	$ 1,319
Supplemental balance sheet information
Operating lease ROU assets	34,571	34,382
Operating lease liabilities:
Accrued expenses and other current liabilities	7,066	6,708
Operating lease liabilities	28,263	28,579
Total operating lease liabilities	$ 35,329	$ 35,287