OTHER COMMITMENTS AND CONTINGENCIES - NARRATIVE (Details)			3 Months Ended	12 Months Ended
	Dec. 16, 2017 USD ($)	Nov. 07, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Oct. 31, 2015 USD ($) ft²	Mar. 31, 2014 USD ($) ft²
Other Commitments [Line Items]
Purchase commitments for inventories			$ 4,300,000	$ 4,300,000
Severance and related expense			1,524,000	1,524,000	$ 0	$ 0
Accrued severance and related			1,242,000	1,242,000	$ 0
Purchase, NY
Other Commitments [Line Items]
Area of real estate property (in square feet) | ft²								3,650
Monthly cost of office space								$ 9,277
Sophia, Bulgaria
Other Commitments [Line Items]
Area of real estate property (in square feet) | ft²							18,745
Monthly cost of office space							$ 5,424
Mr. McCarthy
Other Commitments [Line Items]
Severance and related expense		$ 582,000
Accrued severance and related			397,000	397,000
Mr. Gershon
Other Commitments [Line Items]
Severance and related expense	$ 767,000
Accrued severance and related			670,000	670,000
Purchase, NY
Other Commitments [Line Items]
Severance and related expense		$ 175,000
Accrued severance and related			$ 175,000	$ 175,000