CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net (loss) income	$ (9,625)	$ 6,731
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Loss (gain) on extinguishment and prepayment of debt	0	8,233
Depreciation and amortization	14,286	13,319
Amortization of debt discount, debt issuance costs and royalty rights	118	5,511
Recurring fair value measurement of assets and liabilities	1,602	3,629
Stock-based compensation	1,729	5,527
Provision for inventory and other assets	140	1,808
Other	0	(9)
Changes in assets and liabilities, net of acquisition:
Accounts receivable	(1,118)	29,414
Inventories	4,955	512
Prepaid and other assets	6,640	4,810
Accounts payable and other accrued liabilities	(3,933)	(13,337)
Accrued rebates, returns and discounts	(18,006)	(39,757)
Interest payable	(50)	(7,524)
Net cash used in operating activities	(3,262)	(45,159)
Investing Activities
Purchases of property and equipment	0	(9)
Cash acquired in Zyla Merger	0	7,585
Proceeds from sale of investments	0	6,000
Net cash provided by investing activities	0	512,802
Financing Activities
Payment in connection with Series A-1 and A-2 debt	(4,750)	0
Payment of contingent consideration	(2,495)	0
Payments on Revolver	0	(10,000)
Payments on Promissory Note	0	(3,000)
Payment of Royalty Rights	(498)	0
Proceeds from issuance of common stock	44,861	0
Proceeds from exercise of stock options	193	0
Shares withheld for payment of employee's withholding tax liability	(407)	(841)
Net cash provided by (used in) financing activities	36,904	(450,347)
Net increase in cash and cash equivalents	33,642	17,296
Cash and cash equivalents at beginning of year	20,786	42,107
Cash and cash equivalents at end of period	54,428	59,403
Supplemental Disclosure of Cash Flow Information
Net cash paid for income taxes	0	396
Cash paid for interest	5,216	11,213
Convertible notes
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Loss (gain) on extinguishment and prepayment of debt	0	47,880
Financing Activities
Payments in connection with debt settlement and extinguishment	0	(264,731)
Senior Notes
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Loss (gain) on extinguishment and prepayment of debt	0	8,233
Financing Activities
Payments in connection with debt settlement and extinguishment	0	(171,775)
Gralise
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Gain (loss) on sale	0	(126,655)
Investing Activities
Proceeds from sale	0	130,261
Gralise | Convertible notes
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Loss (gain) on extinguishment and prepayment of debt	0	47,880
NUCYNTA
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Gain (loss) on sale	0	14,749
Investing Activities
Proceeds from sale	$ 0	$ 368,965