Long-Term Investments (Tables)

6 Months Ended

Jun. 30, 2012

Long-Term Investments [Abstract]

Summary of available-for-sale securities

The following is a summary of available-for-sale securities (in thousands):

June 30, 2012	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Failed Auction Securities	$	9,100	$	—	$	1,402	$	7,698
Brokered certificates of deposit		1,460		12		—		1,472
Certificates of deposit		465		—		—		465
	$	11,025	$	12	$	1,402	$	9,635
December 31, 2011	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Failed Auction Securities	$	9,100	$	—	$	1,628	$	7,472
Brokered certificates of deposits		1,640		8		—		1,648
Certificates of deposit		465		—		—		465
	$	11,205	$	8	$	1,628	$	9,585

Amortized cost and estimated fair value of available-for-sale securities

The amortized cost and estimated fair value of available-for-sale securities on June 30, 2012, by contractual maturities, are shown below (in thousands):

	Cost		Estimated Fair Value
Due in one year or less	$	413	$	414
Due in two to ten years		1,512		1,523
Due in ten to twenty years		3,000		2,710
Due in twenty to forty years		6,100		4,988
	$	11,025	$	9,635

Roll forward of credit loss recognized in earnings on available-for-sale auction rate securities

The following table represents a roll forward of the activity related to the credit loss recognized in earnings on available-for-sale auction rate securities held by the Company for the six months ended June 30 (in thousands):

	2012			2011
Balance at the beginning of the period	$	308		$	610
Reductions for securities sold during the period		—			(366	)
Subsequent loss recovery		(4	)		—
Reductions in the amount related to credit (gain) loss for which other-than-temporary impairment was not previously recognized		—			(1	)
Balance at the end of the period	$	304		$	243