MARKETABLE SECURITITES

3 Months Ended

Mar. 31, 2017

Marketable Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure

MARKETABLE SECURITIES:

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at March 31, 2017, were as follows:

	Amortized Cost		Gross Unrealized					Estimated Fair Market Value
(In thousands)			Gains		Losses
Investments due in 3 months or less:
Commercial paper	$	10,679	$	—	$	—		$	10,679
Corporate securities	21,123		—		(14		)	21,109
Total	31,802		—		(14		)	31,788
Investments due in 4-12 months:
Commercial paper	18,015		—		—			18,015
Corporate securities	67,313		30		(27		)	67,316
Total	85,328		30		(27		)	85,331
Investments due in 12 months or greater:
Corporate securities	77,353		13		(127		)	77,239
Government securities	9,406		—		(11		)	9,395
Total	86,759		13		(138		)	86,634
Total marketable securities	$	203,889	$	43	$	(179	)	$	203,753

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at December 31, 2016, were as follows:

	Amortized Cost		Gross Unrealized					Estimated Fair Market Value
(In thousands)			Gains		Losses
Investments due in 3 months or less:
Commercial paper	$	36,996	$	—	$	—		$	36,996
Corporate securities	9,342		2		(2		)	9,342
Total	46,338		2		(2		)	46,338
Investments due in 4-12 months:
Commercial paper	19,186		—		—			19,186
Corporate securities	59,714		15		(76		)	59,653
Total	78,900		15		(76		)	78,839
Investments due in 12 months or greater:
Corporate securities	63,305		21		(180		)	63,146
Total	63,305		21		(180		)	63,146
Total marketable securities	$	188,543	$	38	$	(258	)	$	188,323

As of March 31, 2017, and December 31, 2016, the Company evaluated the nature of the investments with a loss position, which were primarily high-quality corporate securities, and determined the unrealized losses were not other-than-temporary.