Accrued Liabilities

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued Liabilities

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

	2019		2018
Accrued salaries, benefits and bonus	$	24,737	$	19,063
Accrued professional, consulting and lobbying fees	3,235		4,894
Accrued warranty expense	1,476		898
Accrued income and other taxes	3,362		4,167
Other accrued expenses	12,191		12,070
Accrued liabilities	$	45,001	$	41,092