ACCRUED LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2017

ACCRUED LIABILITIES

Schedule of accounts payable and accrued liabilities

Accrued liabilities consist of the following (in thousands):

	December 31,		December 31,
	2017		2016
Accrued compensation	$	7,345	$	11,730
Accrued royalties		17,370		21,703
Accrued restructuring and one-time termination costs		9,483		—
Other accrued liabilities		26,298		25,965
Total accrued liabilities	$	60,496	$	59,398