NET EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net Earnings - Basic and Diluted	$ 21,406	$ 25,249	$ 29,782	$ 28,930	$ 24,949	$ 25,013	$ 22,731	$ 23,411	$ 105,367	$ 96,104	$ 84,623
Weighted average common shares - basic (in shares)									32,019,000	32,215,000	32,176,000
Effect of dilutive securities - stock options, restricted stock, and performance shares (in shares)									374,000	457,000	327,000
Weighted average common shares - diluted (in shares)									32,393,000	32,672,000	32,503,000
Basic net earnings per common share (in dollars per share)	$ 0.67	$ 0.79	$ 0.93	$ 0.90	$ 0.78	$ 0.78	$ 0.71	$ 0.73	$ 3.29	$ 2.98	$ 2.63
Net earnings per share - diluted (in dollars per share)	$ 0.66	$ 0.78	$ 0.92	$ 0.89	$ 0.76	$ 0.77	$ 0.70	$ 0.72	$ 3.25	$ 2.94	$ 2.60
Anti-dilutive stock options outstanding, excluded from diluted earnings per share calculation (in shares)									371,513	155,294	204,672