Net Income Per Share (Details 1) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	57,091	6,462	15,045	5,908
Dilutive securities	626,000	898,000	714,000	969,000
Diluted (in shares)	21,506,000	21,520,000	21,545,000	21,546,000
Basic (in dollars per share)	$ 0.91	$ 1.11	$ 1.72	$ 2.62
Diluted (in dollars per share)	$ 0.88	$ 1.06	$ 1.66	$ 2.50