SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2017

Available-for-sale securities at June 30, 2017 consisted of the following:


	June 30, 2017
			Gains in Accumulated		Losses in Accumulated
			Other Comprehensive		Other Comprehensive		Estimated Fair
(In thousands)	Amortized Cost		Income		Income		Value
Corporate bonds	$	135,469	$	11	$	(71)	$	135,409
Asset backed securities		94,705		2		(58)		94,649
U.S. government agency securities		62,964		—		(144)		62,820
Commercial paper		7,175		—		(1)		7,174
Certificates of deposit		3,800		1		—		3,801
Total available-for-sale securities	$	304,113	$	14	$	(274)	$	303,853

Available-for-sale securities at December 31, 2016 consisted of the following:


	December 31, 2016
			Gains in Accumulated		Losses in Accumulated
			Other Comprehensive		Other Comprehensive		Estimated Fair
(In thousands)	Amortized Cost		Income		Income		Value
Corporate bonds	$	137,013	$	17	$	(93)	$	136,937
Asset backed securities		55,667		3		(30)		55,640
U.S. government agency securities		49,591		3		(120)		49,474
Commercial paper		19,069		8		(1)		19,076
Certificates of deposit		1,053		—		(1)		1,052
Total available-for-sale securities	$	262,393	$	31	$	(245)	$	262,179

The amounts recognized in accumulated other comprehensive income (loss) (“AOCI”) for the six months ended June 30, 2017 were as follows:


					Accumulated
	Cumulative		Unrealized		Other
	Translation		Gain (Loss)		Comprehensive
(In thousands)	Adjustment		on Securities		Income (Loss)
Balance at December 31, 2016	$	(204)	$	(214)	$	(418)
Other comprehensive loss before reclassifications		81		(38)		43
Amounts reclassified from accumulated other comprehensive loss		—		(4)		(4)
Net current period change in accumulated other comprehensive loss		81		(42)		39
Balance at June 30, 2017	$	(123)	$	(256)	$	(379)

The amounts recognized in 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 (loss) income		(139)		555		416
Balance at June 30, 2016	$	(128)	$	111	$	(17)

Amounts reclassified from AOCI for the six months ended June 30, 2017 and 2016 were as follows:


	Affected Line Item in the	Six Months Ended June 30,
Details about AOCI Components (In thousands)	Statement of Operations	2017		2016
Change in value of available-for-sale investments
Sales and maturities of available-for-sale investments	Investment income	$	(4)	$	39
Total reclassifications		$	(4)	$	39


		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
Building Improvements		Lesser of the remaining building life or useful life
Furniture and fixtures		3 years
Buildings		30 years

The table below represents future amortization expense as of June 30, 2017:


	June 30,
(In thousands)	2017	2016
Shares issuable upon exercise of stock options	3,513	5,181
Shares issuable upon the release of restricted stock awards	5,424	5,977
	8,937	11,158


	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2017		2016		2017		2016
Revenue recognized on an accrual basis	$	57,646	$	19,579	$	101,500	$	33,255
Revenue recognized when cash is received		—		1,606		4,509		2,765
Total	$	57,646	$	21,185	$	106,009	$	36,020

Inventory consists of the following:


	June 30,		December 31,
(In thousands)	2017		2016
Raw materials	$	5,009	$	2,408
Semi-finished and finished goods		7,401		4,425
Total inventory	$	12,410	$	6,833