Per Share Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Basic Earnings per Share:
NET INCOME	$ 13,064	$ 15,271	$ 15,067	$ 12,639	$ 11,097	$ 11,813	$ 43,402	$ 35,549
Weighted Average Shares Outstanding (in shares)	26,643,064			22,968,047			25,541,843	22,958,977
Basic Earnings per Share (USD per share)	$ 0.49			$ 0.55			$ 1.70	$ 1.55
Diluted Earnings per Share:
NET INCOME	$ 13,064	$ 15,271	$ 15,067	$ 12,639	$ 11,097	$ 11,813	$ 43,402	$ 35,549
Weighted Average Shares Outstanding (in shares)	26,643,064			22,968,047			25,541,843	22,958,977
Potentially Dilutive Shares, Net (in shares)	0			0			0	0
Diluted Weighted Average Shares Outstanding (in shares)	26,643,064			22,968,047			25,541,843	22,958,977
Diluted Earnings per Share (USD per share)	$ 0.49			$ 0.55			$ 1.70	$ 1.55
Anti-dilutive securities excluded from computation of earnings per share (in shares)	0			0			0	0