ACCRUED LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2019

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of accounts payable and accrued liabilities

Accrued liabilities consist of the following (in thousands):

	December 31,
	2019		2018
Accrued compensation	$	6,188	$	5,475
Accrued royalties	887		2,773
Accrued restructuring and one-time termination costs	3,763		1,578
Other accrued liabilities	8,110		21,535
Total accrued liabilities	$	18,948	$	31,361