Marketable Securities

12 Months Ended

Dec. 31, 2017

Investments Debt And Equity Securities [Abstract]

NOTE 3 – MARKETABLE SECURITIES

The table below summarizes the Company’s cash equivalents and available-for-sale securities (in thousands):

			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
	Cost		Gains		(Losses)			Fair Value
December 31, 2017
Cash equivalents:
Money market funds	$	24,290	$	—	$	—		$	24,290
Commercial paper securities		4,595		—		—			4,595
Total		28,885		—		—			28,885
Available-for-sale securities:
Commercial paper securities		110,365		—		(118	)		110,247
Corporate debt securities		75,886		—		(131	)		75,755
U.S. government-sponsored entity debt securities		8,498		—		(6	)		8,492
Total		194,749		—		(255	)		194,494
Total cash equivalents and available-for-sale securities	$	223,634		—	$	(255	)	$	223,379
December 31, 2016
Cash equivalents:
Money market funds	$	18,992	$	—	$	—		$	18,992
Total		18,992		—		—			18,992
Available-for-sale securities:
Commercial paper securities		23,112		73		—			23,185
Corporate debt securities		10,005		—		(1	)		10,004
U.S. government-sponsored entity debt securities		87,307		3		(25	)		87,285
Total		120,424		76		(26	)		120,474
Total cash equivalents and available-for-sale securities	$	139,416	$	76	$	(26	)	$	139,466

As of December 31, 2017, all of the Company’s investments had maturity dates within two years as of the balance sheet date. The Company had no material realized losses from the sale of available-for-sale securities for the years ended December 31, 2017, 2016 or 2015. Sangamo has the intent and ability to hold its investments for a period of time sufficient to allow for any anticipated recovery in market value. No investments were other-than-temporarily impaired at either December 31, 2017 or 2016.