INCOME TAXES (Detail Textuals) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Increase in ownership percentage of certain stockholders or public groups	more than 50 percentage points
Ownership change, increase in ownership percentage, term	3 years
Federal income tax
Operating Loss Carryforwards [Line Items]
Net operating loss		$ 357,122
Net operating loss generated from excess tax deduction from share based awards		15,020
State income tax
Operating Loss Carryforwards [Line Items]
Net operating loss		176,712
Net operating loss generated from excess tax deduction from share based awards		868
Research and development credit carryforwards
Operating Loss Carryforwards [Line Items]
Net operating loss		$ 27,750