Marketable Securities and Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Investments Debt And Equity Securities [Abstract]

Summary of Available-for-Sale Marketable Securities

The available-for-sale marketable securities consist of the following (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
December 31, 2014
U.S. treasuries	$	50,075	$	22	$	(15	)	$	50,082
Mutual funds		500		6		–			506
Total investments	$	50,575	$	28	$	(15	)	$	50,588
December 31, 2013:
U.S. treasuries	$	35,900	$	38	$	(20	)	$	35,918
Mutual funds		500		8	–				508
Total investments	$	36,400	$	46	$	(20	)	$	36,426

Summary of Financial Assets Measured at Fair Value on Recurring Basis

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis (in thousands):

	Total Fair Value		Level I		Level II		Level III
December 31, 2014
Certificate of deposit	$	2,318	$	2,318	$	–	$	–
U.S. treasuries		50,082		50,082	–		–
Mutual funds		506		506	–		–
Interest rate cap		1	–			1	–
Total	$	52,907	$	52,906	$	1	$	–
December 31, 2013:
Certificates of deposit	$	2,858	$	2,858	$	–	$	–
U.S. treasuries		35,918		35,918	–		–
Mutual funds	508		508		–		–
Interest rate cap	47		–		47		–
Total	$	39,331	$	39,284	$	47	$	–