Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2017

Payables and Accruals [Abstract]

Accrued liabilities

Accrued liabilities consist of the following (in thousands):

	March 31, 2017		December 31, 2016
Accrued payroll and related costs	$	814	$	1,299
Warranty reserve	130		118
Restructuring charges	225		273
Other accrued liabilities	381		484
	$	1,550	$	2,174