SHAREHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Mar. 14, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 31, 2017	Apr. 30, 2017
Equity, Class of Treasury Stock [Line Items]
Preferred stock, shares authorized (in shares)		1,000,000	1,000,000
Common stock, authorized (in shares)		40,000,000	40,000,000		40,000,000	20,000,000
Common stock, issued (in shares)		23,753,551	23,527,307
Common stock, outstanding (in shares)		23,527,307	23,527,307
Shares exercised (in shares)		428,852	226,595	411,212
Shares repurchased (in shares)		83,512	43,900	82,970
Proceeds from public offering of common stock, net of expenses	$ 98,600	$ 0	$ 0	$ 93,306
Repayment of outstanding debt	$ 93,300
Shareholder Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)		102,932	1,984,095	0
Common Stock
Equity, Class of Treasury Stock [Line Items]
Shares issued in public equity offering (in shares)	2,025,000			2,025,000
Price per share in public offering (in dollars per share)	$ 48.67