Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Payables and Accruals [Abstract]

Accrued Liabilities

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

	December 31, 2020		December 31, 2019
Accrued salaries, benefits and bonus	$	36,892	$	24,737
Accrued professional, consulting and lobbying fees		3,055		3,235
Accrued warranty expense		769		1,476
Accrued income and other taxes		3,848		3,362
Accrued inventory in transit		4,597		4,156
Other accrued expenses		10,682		8,035
Accrued liabilities	$	59,843	$	45,001