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

9 Months Ended

Sep. 30, 2017

Cash and Cash Equivalents [Abstract]

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 (in thousands):

	September 30, 2017		December 31, 2016
Cash and cash equivalents:
Cash	$	53,716	$	58,691
Cash equivalents	4,812		23,809
Cash and cash equivalents	$	58,528	$	82,500
Short-term investments	$	12,281	$	19,015
Restricted cash	$	2,917	$	4,085

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 September 30, 2017									As of December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Loss			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Loss			Fair Value
Marketable securities:
Money market funds	$	11,530	$	—	$	—		$	11,530	$	199	$	—	$	—		$	199
Money market accounts	4,812		—		—			4,812		23,809		—		—			23,809
Corporate debt securities	—		—		—			—		9,438		4		(3		)	9,439
Government agency securities	—		—		—			—		3,767		—		(10		)	3,757
U.S. government securities	753		—		(2		)	751		5,008		—		(10		)	4,998
Sovereign government bonds	—		—		—			—		622		—		—			622
Total	$	17,095	$	—	$	(2	)	$	17,093	$	42,843	$	4	$	(23	)	$	42,824
Reported as:
Cash equivalents	$	4,812	$	—	$	—		$	4,812	$	23,809	$	—	$	—		$	23,809
Short-term investments	12,283		—		(2		)	12,281		19,034		4		(23		)	19,015
Total	$	17,095	$	—	$	(2	)	$	17,093	$	42,843	$	4	$	(23	)	$	42,824

Maturities of Marketable Securities

As of September 30, 2017 and December 31, 2016, maturities of marketable securities were as follows (in thousands):

	September 30, 2017		December 31, 2016
Less than 1 year	$	17,093	$	36,054
Due in 1 to 2 years	—		6,468
Due in 3 to 5 years	—		302
Total	$	17,093	$	42,824