Investments (Tables)

9 Months Ended

Sep. 30, 2012

Investments [Abstract]

Amortized Cost and Fair Value of Investments

The amortized cost and fair value of these investments were as follows (in thousands):

	September 30, 2012							December 31, 2011
	Cost or Amortized Cost		Net Unrealized Gain (Loss)			Fair Value		Cost or Amortized Cost		Net Unrealized Gain (Loss)			Fair Value
Debt	$	7,150	$	(450	)	$	6,700	$	7,150	$	(1,050	)	$	6,100
Equity (1)		2,000		700			2,700		2,000		400			2,400
Total	$	9,150	$	250		$	9,400	$	9,150	$	(650	)	$	8,500

(1)  As of September 30, 2012 and December 31, 2011, cost and fair value of the two preferred stock investments were $0.

Changes in Fair Value of Investments

The changes in fair value of the investments were recorded as follows (in thousands):

	Quarters Ended					Nine Months Ended
	September 30,					September 30,
	2012		2011			2012		2011
Debt Securities
Fair value at beginning of period	$	6,700	$	6,900		$	6,100	$	6,700
Temporary impairment credits, net		—		300			600		500
Fair value at end of period	$	6,700	$	7,200		$	6,700	$	7,200
Equity Securities
Fair value at beginning of period	$	2,600	$	2,800		$	2,400	$	1,900
Temporary impairment (charges) credits, net		100		(300	)		300		600
Fair value at end of period	$	2,700	$	2,500		$	2,700	$	2,500
Total
Fair value at beginning of period	$	9,300	$	9,700		$	8,500	$	8,600
Temporary impairment credits, net		100		—			900		1,100
Fair value at end of period	$	9,400	$	9,700		$	9,400	$	9,700