Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net (loss) income	$ (10,709)	$ 48,325
Adjustments to reconcile net (loss) income to net cash flows from operating activities
Depreciation	230	111
Accretion of debt discount and loan costs	625	1,040
Amortization of intangible assets	1,289	1,369
(Benefit) provision for inventory obsolescence	(66)	153
Stock-based compensation expense	2,921	3,070
Deferred income taxes		(15,972)
Bargain purchase gain		(27,336)
Changes in assets and liabilities, net of effect of acquisition:
Accounts receivable	864	(2,662)
Inventories	716	480
Prepaid expenses and other assets	782	194
Accounts payable and accrued expenses	(3,413)	3,942
Deferred revenue		(21,716)
Net cash flows used in operating activities	(6,761)	(9,002)
Investing activities:
BELBUCA® acquisition	(1,951)
Purchase of equipment	(73)
Net cash flows used in investing activities	(2,024)
Financing activities:
Proceeds from notes payable		45,000
Proceeds from exercise of stock options	130
Payment on note payable		(30,000)
Payment of deferred financing fees	(450)	(2,798)
Net cash flows (used in) provided by financing activities	(320)	12,202
Net change in cash and cash equivalents	(9,105)	3,200
Cash and cash equivalents at beginning of period	21,195	32,019
Cash and cash equivalents at end of period	12,090	35,219
Cash paid for interest	1,880	946
Non-cash Operating, Financing and Investing Activities:
Common stock issuance upon retirement	$ 4,300
Fair value of bargain purchase price of BELBUCA acquisition		$ 27,300