Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

	March 31, 2018		December 31, 2017
Accrued payroll-related expenses	$	6,090	$	10,669
Accrued other expenses	4,921		5,067
Total accrued liabilities	$	11,011	$	15,736