Cash, Cash Equivalents and Short-Term Investments

The following tables present current and prior-year-end balances for cash, cash equivalents and short-term investments (in thousands):



	As of September 30, 2014
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
Cash and cash equivalents:
Demand deposits and other cash	$	9,409	$	—	$	—		$	9,409
Money market funds	6,775		—		—			6,775
Total cash and cash equivalents	16,184		—		—			16,184

Short-Term Investments:
Commercial paper	1,599		—		—			1,599
U.S. government agency securities	8,502		3		—			8,505
U.S. Treasury securities	3,551		3		—			3,554
Municipal debt securities	3,944		4		—			3,948
Corporate debt securities	83,080		12		(51		)	83,041
Total short-term investments	100,676		22		(51		)	100,647
Total cash, cash equivalents and short-term investments	$	116,860	$	22	$	(51	)	$	116,831



	As of December 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
Cash and cash equivalents:
Demand deposits and other cash	$	15,451	$	—	$	—		$	15,451
Money market funds	22,991		—		—			22,991
Commercial paper	150		—		—			150
Corporate debt securities	1,060		—		—			1,060
Total cash and cash equivalents	39,652		—		—			39,652
Short-Term Investments:
Commercial paper	750		—		—			750
U.S. government agency securities	11,275		5		(1		)	11,279
U.S. Treasury securities	5,233		2		—			5,235
Municipal debt securities	4,758		7		—			4,765
Corporate debt securities	65,982		20		(7		)	65,995
Total short-term investments	87,998		34		(8		)	88,024
Total cash, cash equivalents and short-term investments	$	127,650	$	34	$	(8	)	$	127,676

The Company has determined that the unrealized losses on its short-term investments as of September 30, 2014 and December 31, 2013 do not constitute an "other than temporary impairment." The unrealized losses for the short-term investments have all been in a continuous unrealized loss position for less than twelve months. The Company’s conclusion of no “other than temporary impairment” is based on the high credit quality of the securities, their short remaining maturity (less than five months, weighted average) and the Company’s intent and ability to hold such loss securities until maturity.

Classification of the cash, cash equivalent and short-term investments by contractual maturity was as follows:



(in thousands)	One year or shorter		Between 1 and 2 years		Total
Balances as of September 30, 2014
Cash and cash equivalents (1)	$	16,184	$	—	$	16,184
Short-term investments	84,589		16,058		100,647
Cash, cash equivalents and short-term investments	$	100,773	$	16,058	$	116,831

Balances as of December 31, 2013
Cash and cash equivalents (1)	$	39,652	$	—	$	39,652
Short-term investments	71,464		16,560		88,024
Cash, cash equivalents and short-term investments	$	111,116	$	16,560	$	127,676

(1) Includes demand deposits and other cash, money market funds and other cash equivalent securities, all with 0-90 day maturity at purchase.

All the above tables exclude restricted cash, primarily held in certificates of deposit, of $40,000 and $0.3 million as of September 30, 2014 and December 31, 2013, respectively, which is classified within prepaid expenses and other current assets on the balance sheet.