Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Summary Of Significant Accounting Policies [Line Items]

Schedule of reconciliation of restricted cash

	June 30,		December 31,		June 30,		December 31,
	2018		2017		2017		2016
	(in thousands)
Cash and cash equivalents in balance sheet	$	12,306	$	12,620	$	7,138	$	15,256
Restricted cash, current portion in balance sheet		5,612		59		764		1,092
Restricted cash in other assets in balance sheet		342		342		342		342
Total cash, cash equivalents and restricted cash in statements of cash flows	$	18,260	$	13,021	$	8,244	$	16,690

Schedule of Accumulated Other Comprehensive Loss

	Balance at						Balance at
	December 31,				Reclassification		June 30,
	2017		Increase		Adjustment		2018
	(in thousands)
Unrealized (loss) gain on available-for-sale securities, net of tax	$	(766)	$	(124)	$	32	$	(858)
Total accumulated other comprehensive (loss) income, net of tax	$	(766)	$	(124)	$	32	$	(858)

Accounting Standards Update 2014-09

Summary Of Significant Accounting Policies [Line Items]

Schedule of cumulative-effect adjustment

Upon the adoption of ASC 606, the Company revised the following selected amounts in its condensed consolidated balance sheet from amounts previously reported:

	December 31, 2017
	As Previously		Adoption of
	Reported		ASC 606		As Revised
	(in thousands)
Accounts receivable, net of allowance	$	8,252	$	35,837	$	44,089
Other accrued liabilities		33,207		50		33,257
Accumulated deficit	$	(482,162)	$	35,787	$	(446,375)

Upon the adoption of ASC 606, the Company restated the following selected amounts in its unaudited condensed consolidated statements of operations and comprehensive loss from amounts previously reported:

	Three months ended June 30, 2017
	As Previously		Adoption of
	Reported		ASC 606		As Revised
	(in thousands)
Product revenues	$	52,276	$	(1,347)	$	50,929
Licensing and other revenues		1,341		13		1,354
Total revenues		53,617		(1,334)		52,283
Loss from operations		(27,037)		(1,334)		(28,371)
Net loss		(27,732)		(1,334)		(29,066)
Net loss per share:
Basic		(0.52)		(0.03)		(0.55)
Diluted	$	(0.52)	$	(0.03)	$	(0.55)

	Six months ended June 30, 2017
	As Previously		Adoption of
	Reported		ASC 606		As Revised
	(in thousands)
Product revenues	$	98,189	$	1,134	$	99,323
Licensing and other revenues		2,329		13		2,342
Total revenues		100,518		1,147		101,665
Loss from operations		(64,068)		1,147		(62,921)
Net loss		(63,693)		1,147		(62,546)
Net loss per share:
Basic		(1.20)		0.02		(1.18)
Diluted	$	(1.20)	$	0.02	$	(1.18)

	Six months ended June 30, 2017
	As Previously		Adoption of		Adoption of
	Reported		ASU 2016-18		ASC 606		As Revised
	(in thousands)
Operating activities:
Net loss	$	(63,693)	$	—	$	1,147	$	(62,546)
Changes in operating assets and liabilities:
Accounts receivable		6,530		—		(1,147)		5,383
Net cash used in operating activities		(38,066)		(328)		—		(38,394)
Cash, cash equivalents and restricted cash, beginning of period		15,256		1,434		—		16,690
Cash, cash equivalents and restricted cash, end of period	$	7,138	$	1,106	$	—	$	8,244

Accounting Standards Update 2016-18

Summary Of Significant Accounting Policies [Line Items]

Schedule of cumulative-effect adjustment

	Six months ended June 30, 2017
	As Previously		Adoption of		Adoption of
	Reported		ASU 2016-18		ASC 606		As Revised
	(in thousands)
Operating activities:
Net loss	$	(63,693)	$	—	$	1,147	$	(62,546)
Changes in operating assets and liabilities:
Accounts receivable		6,530		—		(1,147)		5,383
Net cash used in operating activities		(38,066)		(328)		—		(38,394)
Cash, cash equivalents and restricted cash, beginning of period		15,256		1,434		—		16,690
Cash, cash equivalents and restricted cash, end of period	$	7,138	$	1,106	$	—	$	8,244