Accrued liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Accrued liabilities [Abstract]

Accrued liabilities

The components of accrued liabilities are:

	December 31,
(In thousands)	2019		2018
Salaries and compensation related	$	1,541	$	1,817
Warranty		174		192
Professional and consulting		465		231
Other		861		525
	$	3,041	$	2,765