Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Schedule of Accrued Current Liabilities

Accrued current liabilities consisted of the following (in thousands):

	At December 31,
	2017		2016
Accrued payroll and related benefits	$	394	$	522
Accrued sales commissions and incentives	124		325
Accrued warranty expense	174		331
Accrued severance and related benefits	—		328
Accrued restructuring - short-term	170		—
Accrued legal and professional fees	77		63
Accrued other expenses	53		107
Total accrued liabilities	$	992	$	1,676