ACCRUED LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2019

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of accrued liabilities

Accrued liabilities consist of the following (in thousands):

	June 30, 2019		December 31, 2018
Accrued compensation	$	4,377	$	5,475
Accrued royalties	2,765		2,773
Accrued restructuring and one-time termination costs	478		1,578
Other accrued liabilities	12,028		21,535
Total accrued liabilities	$	19,648	$	31,361