Investments and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2014

Investments and Fair Value Measurements [Abstract]

Our cash, cash equivalents and investments are classified as follows (in thousands):

	September 30, 2014									December 31, 2013
			Gross		Gross							Gross		Gross
	Amortized		Unrealized		Unrealized			Fair		Amortized		Unrealized		Unrealized			Fair
	Cost		Gain		(Loss)			Value		Cost		Gain		(Loss)			Value
Classified as:
Cash	$	25,769	$	—	$	—		$	25,769	$	24,852	$	—	$	—		$	24,852
Cash equivalents:
Money market fund		24		—		—			24		109		—		—			109
Total cash and cash equivalents		25,793		—		—			25,793		24,961		—		—			24,961

Investments (available for sale):
Certificates of deposit		9,713		2		(16	)		9,699		6,320		2		(4	)		6,318
Corporate bonds		11,543		2		(26	)		11,519		14,276		8		(6	)		14,278
Corporate equity security		88		1,392		—			1,480		125		1,923		—			2,048
Total investments		21,344		1,396		(42	)		22,698		20,721		1,933		(10	)		22,644
Total cash, cash equivalents and investments	$	47,137	$	1,396	$	(42	)	$	48,491	$	45,682	$	1,933	$	(10	)	$	47,605
Contractual maturities on investments:
Due within 1 year	$	13,972						$	15,366	$	10,569						$	12,499
Due after 1 through 5 years		7,372							7,332		10,152							10,145
	$	21,344						$	22,698	$	20,721						$	22,644

Fair value and gross unrealized losses related to available-for-sale securities

The following table summarizes the fair value and gross unrealized losses related to available-for-sale securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of September 30, 2014 (in thousands):

	In Loss Position < 12 months					In Loss Position > 12 months					Total In Loss Position
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		(Losses)			Value		(Losses)			Value		(Losses)
Investments:
Certificates of deposit	$	4,009	$	(16	)	$	—	$	—		$	4,009	$	(16	)
Corporate bonds		3,802		(25	)		4,583		(1	)		8,385		(26	)
Total in loss position	$	7,811	$	(41	)	$	4,583	$	(1	)	$	12,394	$	(42	)

	In Loss Position < 12 months					In Loss Position > 12 months					Total In Loss Position
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		(Loss)			Value		(Loss)			Value		(Loss)
Investments:
Certificates of deposit	$	3,425	$	(4	)	$	720	$	(0	)	$	4,145	$	(4	)
Corporate bonds		4,473		(5	)		3,711		(1	)		8,184		(6	)
Total in loss position	$	7,898	$	(9	)	$	4,431	$	(1	)	$	12,329	$	(10	)

Summary of financial assets and liabilities measured at fair value on a recurring basis

The following table summarizes our financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 (in thousands):

	Balance as of September 30, 2014		Quoted Prices in Active Markets of Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets:
Cash equivalents and investments:
Money market fund	$	24	$	24	$	—
Corporate equity securities		1,480		1,480		—
Certificates of deposit		9,699		—		9,699
Corporate bonds		11,519		—		11,519
Total	$	22,722	$	1,504	$	21,218
Liabilities	$	—	$	—	$	—

The following table summarizes our financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2013 (in thousands):

	Balance as of December 31, 2013		Quoted Prices in Active Markets of Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets:
Cash equivalents and investments:
Money market fund	$	109	$	109	$	—
Corporate equity securities		2,048		2,048		—
Certificates of deposit		6,318		—		6,318
Corporate bonds		14,278		—		14,278
Total	$	22,753	$	2,157	$	20,596
Liabilities	$	—	$	—	$	—