Significant Accounting Policies - Net Income (Loss) Per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule of reconciliation of shares used to calculate basic and diluted earnings per share
Weighted average shares outstanding used to compute basic earnings per share (in shares)	23,948	23,974
Incremental shares issuable upon the assumed exercise of stock options (in shares)	2	7
Unvested restricted stock and restricted stock units (in shares)	164	172
Shares used to compute diluted earnings per share (in shares)	24,114	24,153
Anti-dilutive shares excluded from the diluted earnings per share calculation (in shares)	420	118