Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

	As of December 31, 2013				Fair Value Measurements
	Carrying		Fair		As of December 31, 2013
	Amount		Value		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents:
Cash	$	10,315	$	10,315	$	10,315	$	—	$	—
Money market funds	35,324		35,324		35,324		—		—
	$	45,639	$	45,639	$	45,639	$	—	$	—
Marketable securities:
Money market funds	$	48	$	48	$	48	$	—	$	—
Mutual funds	55		55		55		—		—
U.S. Treasury securities	1,730		1,730		1,730		—		—
Government agency securities	382		382		382		—		—
	$	2,215	$	2,215	$	2,215	$	—	$	—

Fair Value Measurements, Nonrecurring [Table Text Block]

The following table summarizes these assets of the Company measured at fair value on a nonrecurring basis as of December 31, 2012:

			Fair Value Measurements as of
	Carrying Amount as of		December 31, 2012
	December 31, 2012		Level 1		Level 2		Level 3
Long-lived assets held and used:
Goodwill	$	2,523	$	—	$	—	$	2,523