SHAREHOLDERS' EQUITY (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended	90 Months Ended
	Dec. 31, 2017	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2017	Apr. 30, 2012	Nov. 30, 2011	Oct. 31, 2011	Aug. 31, 2010	Feb. 15, 2009
Equity Class Of Treasury Stock [Line Items]
Treasury stock acquired	1,230
Shareholder notes receivable		$ 0		$ 4,000
Common stock purchased per right									1
Right issue share price									$ 7.00
Minimum subscription percentage		20.00%
Number of business days to trigger a distribution date		10 days
Share acquisition percentage		50.00%
Prior to a person becoming an acquiring person, the board of directors of the company's redemption rate									$ 0.001
Employee stock purchase plan, shares authorized								2,500,000
Maximum amount limit for ESPP per employee								$ 20,000
Purchase price to market price matching percentage								100.00%
October 2011
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 7,500,000	$ 2,500,000	$ 1,000,000
Treasury stock acquired			3,022,349
Repurchase of common stock into treasury			$ 6,800,000