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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2012
Fair Value Disclosures [Abstract]  
Fair Value Of Certain Financial Assets And Liabilities
The fair value of certain financial assets and liabilities of the Company was determined using the following inputs:  
 
 
 
 
December 31, 2012
 
 
 
 
Fair Value Measurements at Reporting Date Using
 
 
Total
 
Quoted Prices in
Active  Markets
for Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Assets
 
 
 
 
 
 
 
 
Equity available-for-sale securities
 
$
15,926

 
$
15,926

 
$
—

 
$
—

Fixed-income available-for-sale securities
 
59,943

 
—

 
59,943

 
—

Fixed income securities owned
 
20,088

 
—

 
20,088

 
—

Trading securities
 
5,909

 
4,706

 
—

 
1,203

 
 
$
101,866

 
$
20,632

 
$
80,031

 
$
1,203

 
 
 
 
 
December 31, 2011
 
 
 
 
Fair Value Measurements at Reporting Date Using
 
 
Total
 
Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Assets
 
 
 
 
 
 
 
 
Equity available-for-sale securities
 
$
8,010

 
$
8,010

 
$
—

 
$
—

Fixed-income available-for-sale securities
 
74,998

 
—

 
74,998

 
—

Fixed income securities owned
 
20,949

 
—

 
20,949

 
—

Trading securities
 
56,325

 
3,702

 
—

 
52,623

 
 
$
160,282

 
$
11,712

 
$
95,947

 
$
52,623
Reconciliation For All Assets And Liabilities Of The Company Measured At Fair Value On A Recurring Basis Using Significant Unobservable Inputs (Level 3)
The table below presents a reconciliation for all assets and liabilities of the Company measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the period from January 1, 2011 to December 31, 2012:
 
Trading Securities
Balance, January 1, 2011
$
100,645

Purchases
1,215

Issuances
—

Principal prepayments and settlements
(17,921
)
Sales
(34,706
)
Total gains or (losses) (realized/unrealized):
 
Included in earnings
3,390

Included in other comprehensive income
—

Transfers in and out of Level 3
—

Balance, December 31, 2011
$
52,623

Purchases
13

Issuances
—

Principal prepayments and settlements
(10,728
)
Sales
(53,920
)
Total gains or (losses) (realized/unrealized):
 
Included in earnings
13,215

Included in other comprehensive income
—

Transfers in and out of Level 3
—

Balance, December 31, 2012
$
1,203