LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total long-term debt	$ 5,266	$ 4,861
Current portion	(3,093)	(3,048)
Noncurrent portion	2,173	1,813
KBS software installment payment agreement, unsecured, interest at 8.0% per annum, payable in monthly installments of $1,199 through September 2020
Debt Instrument [Line Items]
Total long-term debt	$ 38	21
Debt interest rate	8.00%
Debt instrument periodic payment	$ 1,199
Revolving equipment credit line, unsecured
Debt Instrument [Line Items]
Total long-term debt	7	10
LSV Co-Invest I Promissory Note, Issued June 01, 2018 \| Promissory Note
Debt Instrument [Line Items]
Total long-term debt	$ 909	909
Debt interest rate	10.00%
Paid-in kind interest rate	12.00%
LSV Co-Invest I Promissory Note, Issued January 12, 2018 \| Promissory Note
Debt Instrument [Line Items]
Total long-term debt	$ 528	528
Debt interest rate	10.00%
Paid-in kind interest rate	12.00%
Lone Star Value Management, Unsecured Promissory Note, Issued December 17, 2018 \| Promissory Note
Debt Instrument [Line Items]
Total long-term debt	$ 300	0
Debt interest rate	10.00%
Paid-in kind interest rate	12.00%
Digirad Unsecured Promissory Note, Issued December 12, 2018 \| Promissory Note
Debt Instrument [Line Items]
Total long-term debt	$ 275	275
Debt interest rate	10.00%
Paid-in kind interest rate	12.00%
Vehicle Financing, Due June 2023
Debt Instrument [Line Items]
Total long-term debt	$ 72	79
Debt interest rate	5.90%
Vehicle Financing, Due April 2024
Debt Instrument [Line Items]
Total long-term debt	$ 87	0
Debt interest rate	5.90%
EBGL Capital Lease Computer Equipment \| Capital Lease Obligations
Debt Instrument [Line Items]
Total long-term debt	$ 16	39
Debt interest rate	9.00%
Debt instrument periodic payment	$ 1,105
Equipment Financing
Debt Instrument [Line Items]
Total long-term debt	$ 34	0
Debt interest rate	10.00%
Promissory note payable to Gerber Finance \| Promissory Note
Debt Instrument [Line Items]
Total long-term debt	$ 3,000	$ 3,000
Pledge agreement amount, plus fees	$ 3,000
Promissory note payable to Gerber Finance \| Prime Rate \| Promissory Note
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%

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