CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating Activities
Net (loss) income	$ (3,791)	$ (24,575)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	19,468	77,225
Loss on disposal of equipment	0	10,076
Amortization of debt discount, debt issuance costs and royalty rights	5,614	18,090
Recurring fair value measurement of assets and liabilities	5,485	4,843
Stock-based compensation	7,038	8,340
Provision for inventory and other assets	2,561	295
Deferred income tax benefit	0	(5,636)
Other	0	(328)
Changes in assets and liabilities:
Accounts receivable	24,944	(6,216)
Inventories	(792)	(213)
Income tax receivable	(6,979)	0
Prepaid and other assets	8,816	38,600
Accounts payable and other accrued liabilities	(18,447)	17,381
Accrued rebates, returns and discounts	(43,265)	(14,780)
Interest payable	(4,449)	(4,958)
Income taxes payable	0	(9,139)
Net cash (used in) provided by operating activities	(59,590)	82,620
Investing Activities
Purchases of property and equipment	(10)	(1,526)
Cash acquired in Zyla Merger	7,585	0
Proceeds from sale of investments	6,000	0
Purchases of marketable securities	0	(12,065)
Sales of marketable securities	0	4,209
Maturities of marketable securities	0	7,856
Net cash provided by (used in) investing activities	512,801	(1,526)
Financing Activities
Payment in connection with Series A-1 and A-2 debt	(10,000)	0
Payments on Revolver	(10,000)	0
Payments on Promissory Note	(3,000)	0
Payment of contingent consideration	(261)	0
Proceeds from issuance of common stock	0	183
Shares withheld for payment of employee's withholding tax liability	(814)	(528)
Net cash used in financing activities	(460,581)	(137,862)
Net decrease in cash and cash equivalents	(7,370)	(56,768)
Cash and cash equivalents at beginning of year	42,107	110,949
Cash and cash equivalents at end of period	34,737	54,181
Supplemental Disclosure of Cash Flow Information
Net cash paid for income taxes	865	420
Cash paid for interest	12,100	32,054
Convertible notes
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (gain) on extinguishment and prepayment of debt	47,880	(26,385)
Financing Activities
Payments in connection with debt settlement and extinguishment	(264,731)	(30,000)
Payments of issuance costs and fees for modification of debt	0	(4,268)
Senior Notes
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (gain) on extinguishment and prepayment of debt	8,233	0
Financing Activities
Payments in connection with debt settlement and extinguishment	(171,775)	(100,000)
Payments of issuance costs and fees for modification of debt	0	(3,249)
Gralise
Adjustments to reconcile net income (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 income (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