STOCKHOLDERS' EQUITY (Details) - USD ($)	1 Months Ended	3 Months Ended		44 Months Ended
	Mar. 22, 2019	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Feb. 22, 2019	Jul. 30, 2015
Equity, Class of Treasury Stock [Line Items]
Authorized amount of stock repurchase program						$ 10,000,000
Stock repurchased during period (in shares)	2,468,628
Payments for repurchase of common stock	$ 3,703,000	$ 3,982,000	$ 0
Payments for repurchase of common stock, fees and expenses	$ 125,000
Open Market
Equity, Class of Treasury Stock [Line Items]
Stock repurchased during period (in shares)		106,298
Payments for repurchase of common stock		$ 154,000
June 30 2015 Authorization
Equity, Class of Treasury Stock [Line Items]
Payments for repurchase of common stock				$ 7,733,000
Purchase of treasury stock (in shares)				3,890,511
Common Stock
Equity, Class of Treasury Stock [Line Items]
Approved tender offer, amount					$ 3,150,000
Approved tender offer, par value (usd per share)					$ 0.001
Approved tender offer, per share (usd per share)					$ 1.50