Stockholders' Equity - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stockholders' Equity
Average purchase price per share for share repurchase (in dollars per share)			$ 16.54
Aggregate cost			$ 8,803	$ 20,845
Remaining authorized repurchase amount		$ 77,400
Common Stock
Stockholders' Equity
Shares repurchased during the period (in shares)		0	532,034	1,263,159
Treasury stock, shares, retired (in shares)	532,034
Retirement of treasury stock	$ 8,800		$ 8,803	$ 20,845