Per Share Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic Earnings per Share:
Net Income	$ 21,451	$ 22,123	$ 20,807	$ 24,596	$ 23,747	$ 9,067	$ 64,381	$ 57,410
Weighted Average Shares Outstanding (in shares)	29,573,461			29,484,394			29,551,558	29,457,396
Basic Earnings per Share (in dollars per share)	$ 0.73			$ 0.83			$ 2.18	$ 1.95
Diluted Earnings per Share:
Net Income	$ 21,451	$ 22,123	$ 20,807	$ 24,596	$ 23,747	$ 9,067	$ 64,381	$ 57,410
Weighted Average Shares Outstanding (in shares)	29,573,461			29,484,394			29,551,558	29,457,396
Potentially Dilutive Shares, Net (in shares)	0			0			0	0
Diluted Weighted Average Shares Outstanding (in shares)	29,573,461			29,484,394			29,551,558	29,457,396
Diluted Earnings per Share (in dollars per share)	$ 0.73			$ 0.83			$ 2.18	$ 1.95
Anti-dilutive securities excluded from computation of earnings per share (in shares)	0			0			0	0