Marketable Investments (Tables)

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Summary of Company's Marketable Investments

The following table summarizes the Company’s marketable investments (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Market Value
September 30, 2014
Available-for-sale securities
State and municipal obligations	$	1,980	$	2	$	—		$	1,982
Federal agency and corporate obligations		53,528		52		(65	)		53,515
Total	$	55,508	$	54	$	(65	)	$	55,497
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Market Value
December 31, 2013
Available-for-sale securities
State and municipal obligations	$	6,809	$	5	$	—		$	6,814
Federal agency and corporate obligations		74,179		112		(92	)		74,199
Total	$	80,988	$	117	$	(92	)	$	81,013

Summary of Maturity Periods of the Marketable Securities

The following table summarizes the maturity periods of the marketable securities in the Company’s portfolio as of September 30, 2014 (in thousands).

	FY 2014		FY 2015		FY 2016		Thereafter		Total
State and municipal obligations	$	—	$	1,982	$	—	$	—	$	1,982
Federal agency and corporate obligations		3,531		24,219		16,192		9,573		53,515
Total	$	3,531	$	26,201	$	16,192	$	9,573	$	55,497

Summary of Gross Unrealized Losses and Market Value of Available-for-Sale Securities with Unrealized Losses

The following table shows the gross unrealized losses and market value of Forrester’s available-for-sale securities with unrealized losses that are not deemed to be other-than-temporary, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

	As of September 30, 2014
	Less Than 12 Months				12 Months or Greater
	Market		Unrealized		Market		Unrealized
	Value		Losses		Value		Losses
State and municipal bonds	$	—	$	—	$	—	$	—
Federal agency and corporate obligations		16,102		65		—		—
Total	$	16,102	$	65	$	—	$	—
	As of December 31, 2013
	Less Than 12 Months				12 Months or Greater
	Market Value		Unrealized Losses		Market Value		Unrealized Losses
State and municipal bonds	$	—	$	—	$	—	$	—
Federal agency and corporate obligations		30,645		92		—		—
Total	$	30,645	$	92	$	—	$	—

Summary of Company's Fair Value Hierarchy for its Financial Assets

The following table represents the Company’s fair value hierarchy for its financial assets (cash equivalents and investments) measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013 (in thousands):

	As of September 30, 2014
	Level 1		Level 2		Level 3		Total
Money market funds (1)	$	931	$	—	$	—	$	931
State and municipal obligations		—		1,982		—		1,982
Federal agency and corporate obligations		—		53,515		—		53,515
Total	$	931	$	55,497	$	—	$	56,428
	As of December 31, 2013
	Level 1		Level 2		Level 3		Total
Money market funds (1)	$	6,897	$	—	$	—	$	6,897
State and municipal obligations		—		6,814		—		6,814
Federal agency and corporate obligations (2)		—		80,449		—		80,449
Total	$	6,897	$	87,263	$	—	$	94,160

(1) Included in cash and cash equivalents.

(2) $6.2 million are included in cash and cash equivalents at December 31, 2013 as original maturities at the time of purchase were 90 days or less.