SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2016

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Schedule of available-for-sale securities

Available-for-sale securities at June 30, 2016 consisted of the following:

	June 30, 2016
			Gains in Accumulated		Losses in Accumulated
			Other Comprehensive		Other Comprehensive		Estimated Fair
(In thousands)	Amortized Cost		Income		Income		Value
Corporate bonds	$	115,879	$	90	$	(10)	$	115,959
Asset backed securities		48,394		27		(10)		48,411
U.S. government agency securities		4,558		12		—		4,570
Certificates of deposit		3,500		1		—		3,501
Commercial paper		2,625		1		—		2,626
Total available-for-sale securities	$	174,956	$	131	$	(20)	$	175,067

Available-for-sale securities at December 31, 2015 consisted of the following:

	December 31, 2015
			Gains in Accumulated		Losses in Accumulated
			Other Comprehensive		Other Comprehensive		Estimated Fair
(In thousands)	Amortized Cost		Income		Income		Value
Corporate bonds	$	179,471	$	2	$	(262)	$	179,211
Asset backed securities		77,661		—		(166)		77,495
U.S. government agency securities		7,057		—		(18)		7,039
Certificates of deposit		1,999		—		—		1,999
Total available-for-sale securities	$	266,188	$	2	$	(446)	$	265,744

Schedule of amounts recognized in accumulated other comprehensive income (loss) (AOCI)

The amounts recognized in accumulated other comprehensive income (loss) (“AOCI”) for the six months ended June 30, 2016 were as follows:

					Accumulated
	Cumulative		Unrealized		Other
	Translation		Gain (Loss)		Comprehensive
(In thousands)	Adjustment		on Securities		Income (Loss)
Balance at December 31, 2015	$	11	$	(444)	$	(433)
Other comprehensive (loss) income before reclassifications		(139)		516		377
Amounts reclassified from accumulated other comprehensive loss		—		39		39
Net current period change in accumulated other comprehensive income (loss)		(139)		555		416
Balance at June 30, 2016	$	(128)	$	111	$	(17)

The amounts recognized in AOCI for the six months ended June 30, 2015 were as follows:

					Accumulated
	Cumulative		Unrealized		Other
	Translation		Gain (Loss)		Comprehensive
(In thousands)	Adjustment		on Securities		Income (Loss)
Balance at December 31, 2014	$	—	$	(115)	$	(115)
Other comprehensive (loss) income before reclassifications		(32)		142		110
Amounts reclassified from accumulated other comprehensive loss		—		(6)		(6)
Net current period change in accumulated other comprehensive income (loss)		(32)		136		104
Balance at June 30, 2015	$	(32)	$	21	$	(11)

Schedule of amounts reclassified from accumulated other comprehensive income (loss)

Amounts reclassified from AOCI for the six months ended June 30, 2016 and 2015 were as follows (in thousands):

	Affected Line Item in the	Six Months Ended June 30,
Details about AOCI  Components	Statement of Operations	2016		2015
Change in value of available-for-sale investments
Sales and maturities of available-for-sale investments	Investment income	$	39	$	(6)
Total reclassifications		$	39	$	(6)

Schedule of estimated useful lives of fixed assets

	Estimated
Asset Classification	Useful Life
Laboratory equipment	3 - 5 years
Computer equipment and computer software	3 years
Leasehold improvements	Lesser of the remaining lease term or useful life
Furniture and fixtures	3 years
Buildings	30 years

Schedule of potentially issuable common shares not included in the computation of diluted net loss per share because they would have an anti-dilutive effect

	June 30,
	2016	2015
Shares issuable upon exercise of stock options	5,181	5,144
Shares issuable upon the release of restricted stock awards	5,977	2,277
	11,158	7,421

Schedule of inventory

Inventory consists of the following (amount in thousands):

	June 30,		December 31,
	2016		2015
Raw materials	$	2,149	$	1,772
Semi-finished and finished goods		6,255		4,905
Total inventory	$	8,404	$	6,677