LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total long-term debt	$ 5,197	$ 5,161
Current portion	(3,069)	(3,048)
Noncurrent portion	2,128	2,113
Promissory note payable to Gerber Finance
Debt Instrument [Line Items]
Total long-term debt	3,000	3,000
Pledge agreement amount, plus fees	3,000
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	$ 20	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	$ 9	10
Prime Rate \| Promissory note payable to Gerber Finance
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
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	300
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
Debt Instrument [Line Items]
Total long-term debt	$ 76	79
Debt interest rate	5.90%
EBGL Capital Lease Computer Equipment \| Capital Lease Obligations
Debt Instrument [Line Items]
Total long-term debt	$ 36	39
Debt interest rate	9.00%
Debt instrument periodic payment	$ 1,105
Equipment Financing
Debt Instrument [Line Items]
Total long-term debt	$ 44	$ 0
Debt interest rate	10.00%

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