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Investments (Tables)
 9 Months Ended
Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]  
Schedule Of Amortized Costs And Fair Value
The following table summarizes, by major security type, the amortized costs and fair value of the Company’s investments: 
 
September 30, 2013
 
December 31, 2012
(In thousands)
Cost Basis(1)
 
Fair Value
 
Net unrealized loss in AOCI (2)
 
Cost Basis(1)
 
Fair Value
 
Net unrealized gain
(loss) in AOCI
Pre-refunded and municipal bonds
$
—

 
$
—

 
$
—

 
$
15,047

 
$
14,877

 
$
(170
)
Short-term bond mutual funds
6,993

 
6,858

 
(135
)
 
17,014

 
17,196

 
182

Certificates of deposit
1,652

 
1,652

 
—

 
1,779

 
1,779

 
—

Other investment
362

 
362

 
—

 
362

 
362

 
—

Total investments
$
9,007

 
$
8,872

 
$
(135
)
 
$
34,202

 
$
34,214

 
$
12

(1) The cost basis represents the actual amount paid less any permanent impairment recorded on that asset.
Schedule Of Gains And Losses
 
Three months ended
 
Nine months ended
 
(In thousands)
September 30, 2013
 
September 30, 2012
 
September 30, 2013
 
September 30, 2012
Net proceeds
$
9,585

 
$
19,991

 
$
37,861

 
$
53,251

Realized Gains (Losses)
$
(48
)
 
$
185

 
$
(105
)
 
$
919