Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	12,080	15,333
Net Income	$ 23,731	$ 16,834
Weighted average number of common shares outstanding (for basic calculation)	21,149,000	20,780,000
Dilutive securities	546,000	727,000
Diluted (in shares)	21,695,000	21,507,000
EPS - basic	$ 1.12	$ 0.81
Diluted (In dollars per share)	$ 1.09	$ 0.78