Cash, cash equivalents, short-term investments, and restricted cash and investments (Tables)

3 Months Ended

Mar. 31, 2016

Restricted Cash and Investment

Summary of Cash, Cash Equivalents and Short-Term investments and Restricted Cash and Investments

The following table summarizes the Company’s cash, cash equivalents, short-term investments, and restricted cash at March 31, 2016 and December 31, 2015 (in thousands):

	March 31,		December 31,
	2016		2015
Cash and cash equivalents:
Cash	$	30,782	$	29,133
Cash equivalents		31,957		46,955
Cash and cash equivalents	$	62,739	$	76,088
Short-term investments	$	38,364	$	23,294
Restricted cash	$	2,659	$	2,660

Summary of Unrealized Gains and Losses Related to Cash Equivalents and Investments in Marketable Securities

The following table summarizes the Company’s unrealized gains and losses related to its cash equivalents and short-term investments in marketable securities designated as available-for-sale (in thousands):

	As of March 31, 2016								As of December 31, 2015
		Amortized Cost	Gross Unrealized Gains		Gross Unrealized Loss		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Loss		Fair Value
Marketable securities:
Money market accounts	$	31,957	$	—	$	—	$	31,957	$	46,955	$	—	$	—	$	46,955
Money market funds		11,860		—		—		11,860		11,318		—		—		11,318
Corporate bonds		8,204		2		(4)		8,202		5,694		—		(18)		5,676
Government-sponsored enterprise obligations		6,298		1		(1)		6,298		3,290		—		(6)		3,284
Commercial paper		9,632		—		—		9,632		1,398		—		—		1,398
U.S. government securities		1,750		1		—		1,751		1,000		—		(3)		997
Sovereign government bonds		621		—		—		621		623		—		(2)		621
Total	$	70,322	$	4	$	(5)	$	70,321	$	70,278	$	—	$	(29)	$	70,249
Reported as:
Cash equivalents	$	31,957	$	—	$	—	$	31,957	$	46,955	$	—	$	—	$	46,955
Short-term investments		38,365		4		(5)		38,364		23,323		—		(29)		23,294
Total	$	70,322	$	4	$	(5)	$	70,321	$	70,278	$	—	$	(29)	$	70,249

Maturities of Marketable Securities

As of March 31, 2016 and December 31, 2015, maturities of marketable securities were as follows (in thousands):

	March 31,		December 31,
	2016		2015
Less than 1 year	$	69,070	$	66,974
Due in 1 to 2 years		1,251		3,275
Due after 5 years		—		—
Total	$	70,321	$	70,249