Accrued Liabilities

3 Months Ended

Mar. 31, 2020

Payables and Accruals [Abstract]

Accrued Liabilities

8. Accrued Liabilities

Accrued liabilities consisted of the following at March 31, 2020 and December 31, 2019 (in thousands):

	March 31, 2020		December 31, 2019
Accrued salaries, benefits and bonus	$	13,378	$	24,737
Accrued professional, consulting and lobbying fees		8,993		3,235
Accrued warranty expense		1,220		1,476
Accrued income and other taxes		2,093		3,362
Other accrued expenses		10,720		12,191
Accrued liabilities	$	36,404	$	45,001