Cash, Cash Equivalents, Short-Term Investments, and Restricted Cash and Investments (Tables)

9 Months Ended

Sep. 30, 2014

Cash And Cash Equivalents [Abstract]

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

The following table summarizes the Company’s cash, cash equivalents, short-term investments, and restricted cash and investments at September 30, 2014 and December 31, 2013 (in thousands):

	September 30, 2014		December 31, 2013
Cash and cash equivalents:
Cash	$	35,269		$	50,550
Cash equivalents		—			6,551
Cash and cash equivalents	$	35,269		$	57,101
Short-term investments	$	—		$	17,916
Restricted cash and investments:
Restricted cash and investments	$	10,401		$	2,138
Restricted cash and investments, non-current		12,250			—
Total restricted cash and investments	$	22,651		$	2,138

Summary of Unrealized Gains and Losses Related to Cash Equivalents, Short-Term Investments and Restricted Cash and Investments in Marketable Securities

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

	As of September 30, 2014								As of December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash equivalents:
Money market funds	$	—	$	—	$	—	$	—	$	11	$	—	$	—		$	11
Time deposits		—		—		—		—		6,540		—		—			6,540
Total		—		—		—		—		6,551		—		—			6,551
Short-term investments and restricted cash and investments:
Money market funds		15,495		—		—		15,495		4,577		—		—			4,577
Corporate bonds		2,007		6		—		2,013		6,708		3		(5	)		6,706
Foreign bonds and notes		—		—		—		—		4,827		5		—			4,832
Variable rate demand notes		1,700		—		—		1,700		1,801		—		—			1,801
Total		19,202		6		—		19,208		17,913		8		(5	)		17,916
Total marketable securities	$	19,202	$	6	$	—	$	19,208	$	24,464	$	8	$	(5	)	$	24,467

Maturities of Marketable Securities

The following is based on the maturity dates of the underlying marketable securities (in thousands):

	September 30, 2014		December 31, 2013
Less than 1 year	$	15,495	$	20,658
Due in 1 to 2 years		2,013		2,008
Due in 2 to 5 years		—		—
Due after 5 years		1,700		1,801
Total	$	19,208	$	24,467