Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	12,107	57,091	12,080	15,045
Net Income	$ 28,398	$ 18,908	$ 52,129	$ 35,742
Weighted average number of common shares outstanding (for basic calculation)	21,200,000	20,880,000	21,176,000	20,831,000
Dilutive securities	503,000	626,000	542,000	714,000
Diluted (in shares)	21,703,000	21,506,000	21,718,000	21,545,000
EPS - basic	$ 1.34	$ 0.91	$ 2.46	$ 1.72
Diluted (In dollars per share)	$ 1.31	$ 0.88	$ 2.40	$ 1.66