Accrued Expenses

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Accrued Expenses

Accrued Expenses

Accrued expenses consisted of the following (in thousands):

	December 31,
	2017		2016
Compensation	$	19,897	$	13,732
Non-income taxes	6,895		7,383
Royalty tax withholdings	7,566		6,921
Other expenses	24,376		13,070
Total accrued expenses	$	58,734	$	41,106