Investments (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

Investments held consisted of the following (in thousands):



	December 31, 2012
	Amortized cost		Unrealized gains		Unrealized losses			Estimated fair value
Available for sale marketable securities:
U.S. treasury notes	$	60,785	$	4	$	(3	)	$	60,786
Agency bonds⁽¹⁾	31,153		4		—			31,157
Commercial paper	5,000		—		—			5,000
Certificates of deposit	5,494		—		—			5,494
Municipal bonds	3,227		1		—			3,228
Total available for sale marketable securities	105,659		9		(3		)	105,665
Trading Securities:
Equity securities - mutual funds	3,046		—		—			3,046
Cost Method Investments⁽²⁾	608		—		—			608
Total Investments	$	109,313	$	9	$	(3	)	$	109,319



	December 31, 2011
	Amortized cost		Unrealized gains		Unrealized losses			Estimated fair value
Available for sale marketable securities:
Agency bonds⁽¹⁾	$	58,508	$	27	$	(2	)	$	58,533
Commercial paper	5,000		—		—			5,000
Certificates of deposit	3,207		4		—			3,211
Total available for sale marketable securities	66,715		31		(2		)	66,744
Trading Securities:
Equity securities - mutual funds	2,810		—		—			2,810
Cost Method Investments⁽²⁾	608		—		—			608
Total Investments	$	70,133	$	31	$	(2	)	$	70,162


⁽¹⁾	Agency bonds are securities backed by U.S. government-sponsored entities.


⁽²⁾	Investments for which it is not practical to estimate fair value are included at cost and primarily consist of investments in privately-held companies.

Investments by Balance Sheet Grouping [Table Text Block]

Investments were included in the following captions on the balance sheet as follows (in thousands):



	December 31, 2012								December 31, 2011
	Short-term investments		Long-term investments		Other assets		Total		Short-term investments		Long-term investments		Other assets		Total
Available for sale marketable securities:
U.S. treasury notes	$	60,786	$	—	$	—	$	60,786	$	—	$	—	$	—	$	—
Agency bonds	10,148		21,009		—		31,157		8,002		50,531		—		58,533
Commercial paper	5,000		—		—		5,000		5,000		—		—		5,000
Certificates of deposit	3,598		1,896		—		5,494		3,211		—		—		3,211
Municipal bonds	—		3,228		—		3,228		—		—		—		—
Total fixed maturity securities	79,532		26,133		—		105,665		16,213		50,531		—		66,744
Equity Securities:
Mutual funds	—		3,046		—		3,046		—		2,810		—		2,810
Cost Method Investments	—		—		608		608		—		—		608		608
Total Investments	$	79,532	$	29,179	$	608	$	109,319	$	16,213	$	53,341	$	608	$	70,162

Investments Classified by Contractual Maturity Date [Table Text Block]

Contractual maturities or expected liquidation dates of available-for-sale fixed maturity securities at December 31, 2012 were as follows (in thousands):



	Amortized Cost		Fair Value
Due in 1 year or less	$	79,532	$	79,532
Due in 1-5 years	26,127		26,133
Total	$	105,659	$	105,665