EARNINGS PER SHARE (Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic, numerator:
Net income	$ 15,880	$ 1,902	$ 24,376	$ 4,888	$ 17,782	$ 29,264
Effect of unvested restricted stock unit awards	(17)		(11)		(18)	(26)
Adjusted net income	$ 15,863		$ 24,365		$ 17,764	$ 29,238
Basic, denominator:
Weighted-average shares	25,463,559		25,554,286		25,468,624	25,562,306
Earnings per common share (in dollars per share)	$ 0.62		$ 0.95		$ 0.70	$ 1.14
Diluted, numerator:
Net income	$ 15,880	$ 1,902	$ 24,376	$ 4,888	$ 17,782	$ 29,264
Effect of unvested restricted stock unit awards	(17)		(11)		(18)	(25)
Adjusted net income	$ 15,863		$ 24,365		$ 17,764	$ 29,239
Diluted, denominator:
Weighted-average shares	25,463,559		25,554,286		25,468,624	25,562,306
Effect of dilutive securities	754,398		877,306		783,862	920,705
Adjusted weighted-average shares and assumed conversions	26,217,957		26,431,592		26,252,486	26,483,011
Earnings per common share (in dollars per share)	$ 0.61		$ 0.92		$ 0.68	$ 1.10

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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