Net Income Per Share (Details 1) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	14,017	20,116	12,182	9,375
Dilutive securities	608,000	821,000	691,000	949,000
Diluted (in shares)	21,556,000	21,487,000	21,561,000	21,556,000
Basic (in dollars per share)	$ 1.19	$ 1.29	$ 2.91	$ 3.90
Diluted (in dollars per share)	$ 1.16	$ 1.24	$ 2.82	$ 3.73