Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following at December 31 (in thousands):

	2016		2015
Employee compensation	$	8,240	$	8,039
Royalties payable	896		828
Accounting and legal	567		427
Sales, use and other taxes	420		551
Clinical study costs	370		563
Warranty reserves	304		299
Other accrued liabilities	1,547		1,474
Total accrued liabilities	$	12,344	$	12,181