ACCRUED LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2018

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of accounts payable and accrued liabilities

Accrued liabilities consist of the following (in thousands):

	September 30, 2018		December 31, 2017
Accrued compensation	$	4,205	$	7,345
Accrued royalties	4,715		17,370
Accrued restructuring and one-time termination costs	1,835		9,483
Other accrued liabilities	15,320		26,298
Total accrued liabilities	$	26,075	$	60,496