REDEEMABLE PREFERRED STOCK (Details) - USD ($)				12 Months Ended
	Mar. 08, 2017	Dec. 31, 2016	Apr. 22, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 21, 2016
Class of Stock [Line Items]
Net proceeds from issuance of Series A Preferred Stock		$ 1,536,000		$ 1,429,000	$ 0	$ 0
Offering costs		102,000
Offering costs allocated to temporary equity				3,000
Deferred offering costs		$ 2,060,000		$ 2,060,000
Preferred stock dividends, shares				61,000
Dividends, preferred stock, cash				$ 9,000
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, stated value (in usd per share)		$ 0.001		$ 0.001	$ 0		$ 25
Warrant right to purchase a share of Common Stock			0.25
Cumulative dividend rate				5.50%
Preferred stock, shares issued		61,435		61,435	0
Net proceeds from issuance of Series A Preferred Stock		$ 1,528,000
Offering costs		99,000
Deferred offering costs		2,063,000		$ 2,063,000
Preferred stock, dividend rate (in usd per share)				$ 0.34375
Warrant
Class of Stock [Line Items]
Net proceeds from issuance of Series A Preferred Stock		8,000
Offering costs		$ 3,000
Registration statement
Class of Stock [Line Items]
Preferred stock, stated value (in usd per share)			$ 25.00
Maximum number of units in offering			36,000,000
Registration statement | Series A Preferred Stock
Class of Stock [Line Items]
Maximum amount of offering			$ 900,000,000
Preferred stock, stated value (in usd per share)			$ 0.001
Subsequent event | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividends per share, declared	$ 0.34375
Preferred stock, redemption period, year two | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, redemption fee percentage			13.00%
Preferred stock, redemption period, after year two, before year five | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, redemption fee percentage			10.00%
Preferred stock, redemption period, after year five | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, redemption fee percentage			0.00%