NATURE OF OPERATIONS AND GOING CONCERN, BASIS OF PRESENTATION AND RECENT ACCOUNTING PRONOUNCEMENTS - Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Jun. 30, 2019	Dec. 31, 2018
Cash and cash equivalents		$ 9,898	$ 16,660
Lease, practical expedients, package	true
Operating lease right-of-use assets		1,345
Operating lease liabilities		$ 1,450
ASU No. 2016-02 | Adjustment
Operating lease right-of-use assets	$ 1,500
Operating lease liabilities	$ 1,500