Accrued Liabilities

6 Months Ended

Jun. 30, 2020

Payables and Accruals [Abstract]

Accrued Liabilities

8. Accrued Liabilities

Accrued liabilities consisted of the following at June 30, 2020 and December 31, 2019 (in thousands):

	June 30, 2020		December 31, 2019
Accrued salaries, benefits and bonus	$	18,601	$	24,737
Accrued professional, consulting and lobbying fees		4,384		3,235
Accrued warranty expense		1,012		1,476
Accrued income and other taxes		17,296		3,362
Other accrued expenses		23,174		12,191
Accrued liabilities	$	64,467	$	45,001