Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Measurements [Abstract]

Assets measured at fair value on a recurring basis

Assets measured at fair value on a recurring basis include the following as of June 30, 2012 (in thousands):

	Using
	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value as of June 30, 2012
Cash Equivalents:
Money market funds	$	13,446	$	—	$	—	$	13,446
Long term investments:
Failed Auction Securities		—		—		7,698		7,698
Brokered certificates of deposit		—		1,472		—		1,472
Certificate of deposit		465		—		—		465

Quantitative information about Level 3 fair value measurements

Quantitative information about Level 3 fair value measurements as of June 30, 2012 are as follows (dollars in thousands):

	Fair Value	Valuation Technique	Unobservable Input	Range (Weighted Average)
Failed Auction Securities	$7,698	Discounted cash flow	Cumulative probability of earning the maximum rate until maturity	0.01% - 0.14% (0.08%)
			Cumulative probability of principal return prior to maturity	84.06% - 98.27% (92.30%)
			Cumulative probability of default	1.59% - 15.85% (7.62%)
			Liquidity risk premium	5.00% - 5.00% (5.00%)
			Recovery rate in default	40.00% - 70.00% (49.89%)

Change in the estimated fair values calculated for those assets valued on a recurring basis utilizing Level 3 inputs

The following table summarizes the change in the estimated fair values calculated for those assets valued on a recurring basis utilizing Level 3 inputs (i.e., the Failed Auction Securities) for the six months ended June 30, 2012 (in thousands):

Balance at the beginning of the period	$	7,472
Credit gains on available for sales securities included in Other income (expense), net		4
Unrealized gain included in Other comprehensive income (loss)		222
Balance at the end of the period	$	7,698