Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2020

Payables and Accruals [Abstract]

Schedule of accrued expenses

Accrued liabilities consist of the following:

(in thousands)	June 30, 2020		December 31, 2019
Compensation	$	11,630	$	13,167
Right of use liabilities - operating leases	5,497		5,187
Professional fees	3,151		4,128
Contract liabilities	25,427		1,584
Non-income taxes	489		427
Interest	—		569
Operating costs	998		637
Other	814		1,619
Total	$	48,006	$	27,318