EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
EARNINGS PER SHARE
Weighted-average anti-dilutive stock options outstanding (in shares)	200,000	400,000	200,000	300,000
Basic earnings per share
Net Income (Loss)	$ 44,129	$ 48,691	$ 98,218	$ 135,551
Income attributable to unvested stock-based compensation awards	(158)	(142)	(327)	(386)
Income available to common shareholders	$ 43,971	$ 48,549	$ 97,891	$ 135,165
Weighted-average common shares outstanding - basic (in shares)	53,502,000	53,830,000	53,673,000	53,915,000
Basic earnings per share(in dollar per share)	$ 0.82	$ 0.90	$ 1.82	$ 2.51
Diluted earnings per share
Net Income (Loss)	$ 44,129	$ 48,691	$ 98,218	$ 135,551
Income attributable to unvested stock-based compensation awards	(158)	(142)	(327)	(386)
Income available to common shareholders	$ 43,971	$ 48,549	$ 97,891	$ 135,165
Weighted-average common shares outstanding - basic (in shares)	53,502,000	53,830,000	53,673,000	53,915,000
Assumed exercise of stock options (in shares)	104,000	302,000	135,000	328,000
Weighted-average common shares outstanding - diluted (in shares)	53,606,000	54,132,000	53,808,000	54,243,000
Diluted earnings per share(in dollar per share)	$ 0.82	$ 0.90	$ 1.82	$ 2.49
Stock Repurchase Program
Number of common shares authorized to be repurchased (in shares)					2,697,000	2,697,000
Number of common shares repurchased (in shares)			500,000	250,000
Average price per share repurchased	$ 51.35	$ 65.51	$ 51.35	$ 65.51