CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Operating Activities
Net loss	$ (28,144)	$ (217,201)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	26,431	102,946
Amortization of debt discount and debt issuance costs	5,680	23,764
Stock-based compensation	10,924	10,596
Provisions for inventory and other assets	3,817	5,304
Impairment of goodwill and intangible assets	17,432	189,790
Loss on disposal of equipment and early termination of leases	1,588	10,076
Income tax provision	(8,424)	(5,767)
Gain (loss) on extinguishment and prepayment of debt	56,113	(26,385)
Recurring fair value measurement of assets and liabilities	5,129	(1,715)
Other	0	(327)
Changes in assets and liabilities:
Accounts receivable	19,800	(5,533)
Inventories	(291)	(316)
Prepaid and other assets	10,797	40,769
Income taxes receivable	(8,973)	0
Accounts payable and other accrued liabilities	(28,569)	(15,440)
Accrued rebates, returns and discounts	(29,066)	(16,816)
Interest payable	(7,910)	(3,270)
Net cash (used in) provided by operating activities	(65,572)	90,475
Investing Activities
Cash acquired in Zyla Merger	7,585	0
Proceeds from sale of investments	6,000	0
Purchases of property and equipment	(10)	(1,481)
Purchases of marketable securities	0	(12,065)
Maturities of marketable securities	0	4,209
Sales of marketable securities	0	7,856
Net cash provided by (used in) investing activities	512,801	(1,481)
Financing Activities
Payments in connection with debt extinguishment	(264,731)	(30,000)
Repayment of Senior Notes	(171,775)	(120,000)
Payment in connection with 13% Senior Secured Notes	(14,750)	0
Payments on Revolver	(10,000)	0
Payment of contingent consideration liability	(3,016)	0
Payments on Promissory Note	(3,000)	0
Payment of royalty rights obligation	(500)	0
Payment of employees' tax liability related to common shares withheld	(866)	(570)
Convertible notes issuance costs	0	(4,268)
Fees for modification of Senior Notes	0	(3,249)
Proceeds from issuance of common stock	88	251
Net cash used in financing activities	(468,550)	(157,836)
Net decrease in cash and cash equivalents	(21,321)	(68,842)
Cash and cash equivalents at beginning of year	42,107	110,949
Cash and cash equivalents at end of period	20,786	42,107
Supplemental Disclosure of Cash Flow Information
Net cash refund of (paid for) income taxes	1,136	(4,401)
Cash paid for interest	17,598	37,788
Capital expenditures incurred but not yet paid	0	500
Convertible debt
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Amortization of debt discount and debt issuance costs	1,550	15,398
Gain (loss) on extinguishment and prepayment of debt	47,880	(26,385)
Senior Notes
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Amortization of debt discount and debt issuance costs	2,699	5,783
Gain (loss) on extinguishment and prepayment of debt	8,233	0
Financing Activities
Payments in connection with debt extinguishment	$ (4,900)
Senior Notes | 13% Senior Secured Note due 2024
Supplemental Disclosure of Cash Flow Information
Interest rate	13.00%
Gralise
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Gain (loss) on sale	$ (126,655)	0
Investing Activities
Proceeds from sale	130,261	0
NUCYNTA
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Gain (loss) on sale	14,749	0
Investing Activities
Proceeds from sale	$ 368,965	$ 0