SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Taxes
Income tax rate, low end			20.00%
Income tax rate, high end			35.00%
Numerator:
Net income (loss)	$ (14,064)	$ (3,136)	$ (16,892)	$ (4,316)
Less income allocated to RSAs	0	0	0	0
Net income (loss) allocated to common stock for EPS calculation	$ (14,064)	$ (3,136)	$ (16,892)	$ (4,316)
Denominator:
Weighted average common shares outstanding - basic (In shares)	14,368,225	14,195,921	14,333,452	14,105,594
Dilutive stock-based compensation plans (In shares)	0	0	0	0
Weighted average common shares outstanding - diluted (In shares)	14,368,225	14,195,921	14,333,452	14,105,594
Net income (loss) allocated to common stock for EPS calculation:
Basic (in dollars per share)	$ (0.98)	$ (0.22)	$ (1.18)	$ (0.31)
Diluted (in dollars per share)	$ (0.98)	$ (0.22)	$ (1.18)	$ (0.31)