Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Payables and Accruals [Abstract]

Accrued liabilities

Accrued liabilities consist of the following (in thousands):

	September 30, 2017		December 31, 2016
Accrued payroll and related costs	$	1,351	$	1,299
Warranty reserve	138		118
Restructuring charges	185		273
Other accrued liabilities	350		484
	$	2,024	$	2,174