Significant Accounting Policies - Net Income (Loss) Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 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)	23,796	23,975	23,872	23,974
Incremental shares issuable upon the assumed exercise of stock options (in shares)	3	5	2	6
Unvested restricted stock and restricted stock units (in shares)	264	146	215	159
Shares used to compute diluted earnings per share (in shares)	24,063	24,126	24,089	24,139
Anti-dilutive shares excluded from the diluted earnings per share calculation (in shares)	15	385	218	252