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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2012
Fair Value Measurements [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
As of June 30, 2012 and December 31, 2011, assets and liabilities measured at fair value on a recurring basis, including certain loans held for sale for which the Company has elected the fair value option, are as follows:
 
Level 1    
 
Level 2    
 
Level 3    
 
Total    
 June 30, 2012
 
 
 
 
 
 
 
Financial assets:
 
 
 
 
 
 
 
Available for sale securities:
 
 
 
 
 
 
 
Residential CMO securities - agency
$

 
$
77

 
$

 
$
77

Residential CMO securities - nonagency

 
1,842,331

 

 
1,842,331

Residential MBS - agency

 
281

 

 
281

Asset-backed securities

 
7,616

 

 
7,616

Equity securities
221

 

 

 
221

Total available for sale securities
221

 
1,850,305

 

 
1,850,526

Loans held for sale

 
1,105,985

 

 
1,105,985

Financial liabilities:
 
 
 
 
 
 
 
FDIC clawback liability

 

 
46,738

 
46,738

Derivative financial instruments:
 
 
 
 
 
 
 
Cash flow hedges (Note 12)

 
(146,541
)
 

 
(146,541
)
Freestanding derivatives (Note 12)
4,063

 
(999
)
 
9,383

 
12,447

 
 
Level 1    
 
Level 2    
 
Level 3    
 
Total    
December 31, 2011
 
 
 
 
 
 
 
Financial assets:
 
 
 
 
 
 
 
Available for sale securities:
 
 
 
 
 
 
 
Residential CMO securities - agency
$

 
$
104

 
$

 
$
104

Residential CMO securities - nonagency

 
1,895,818

 

 
1,895,818

Residential MBS - agency

 
338

 

 
338

Asset-backed securities

 
7,477

 

 
7,477

Equity securities
185

 

 

 
185

Total available for sale securities
185

 
1,903,737

 

 
1,903,922

Loans held for sale

 
761,818

 
15,462

 
777,280

Financial liabilities:
 
 
 
 
 
 
 
FDIC clawback liability

 

 
43,317

 
43,317

Derivative financial instruments:
 
 
 
 
 
 
 
Cash flow hedges (Note 12)

 
(133,897
)
 

 
(133,897
)
Freestanding derivatives (Note 12)
(6,799
)
 
(4,830
)
 
8,540

 
(3,089
)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Changes in assets and liabilities measured at Level 3 fair value on a recurring basis for the three and six months ended June 30, 2012 and 2011 are as follows:
 
Loans
Held
    for Sale (1)    
 
FDIC Clawback
    Liability (2)    
 
Freestanding Derivatives (3)
Three Months Ended June 30, 2012
 
 
 
 
 
Balance, beginning of period
$

 
$
(43,694
)
 
$
8,814

Total gains (losses) included in earnings for the period

 
(3,044
)
 
569

Balance, end of period
$

 
$
(46,738
)
 
$
9,383

Change in unrealized net gains (losses) included in net income related to assets still held as of June 30, 2012
$

 
$
(3,044
)
 
$
569

 
 
 
 
 
 
Three Months Ended June 30, 2011
 
 
 
 
 
Balance, beginning of period
$
15,049

 
$
(39,628
)
 
$
221

Purchases

 

 
2,700

Issues

 

 
(2,739
)
Settlements
(60
)
 

 
35

Total gains (losses) included in earnings for the period
1,117

 

 
7

Balance, end of period
$
16,106

 
$
(39,628
)
 
$
224

Change in unrealized net gains (losses) included in net income related to assets still held as of June 30, 2011
$
1,117

 
$

 
$
42

 
Loans
Held
    for Sale (1)    
 
FDIC Clawback
    Liability (2)    
 
Freestanding
Derivatives (3)
Six Months Ended June 30, 2012
 
 
 
 
 
Balance, beginning of period
$
15,462

 
$
(43,317
)
 
$
8,539

Settlements
(623
)
 

 

Transfers out of Level 3
(14,946
)
 

 

Total gains (losses) included in earnings for the period
107

 
(3,421
)
 
844

Balance, end of period
$

 
$
(46,738
)
 
$
9,383

Change in unrealized net gains (losses) included in net income related to assets still held as of June 30, 2012
$
107

 
$
(3,421
)
 
$
844

 
 
 
 
 
 
Six Months Ended June 30, 2011
 
 
 
 
 
Balance, beginning of period
$
15,136

 
$
(39,311
)
 
$
8,949

Purchases

 

 
4,075

Issues

 

 
(4,114
)
Settlements
(137
)
 

 
38

Total gains (losses) included in earnings for the period
1,107

 
(317
)
 
(8,724
)
Balance, end of period
$
16,106

 
$
(39,628
)
 
$
224

Change in unrealized net gains (losses) included in net income related to assets still held as of June 30, 2011
$
1,107

 
$
(317
)
 
$
(8,439
)
(1)
Net realized and unrealized gains (losses) on loans held for sale are included in gain on sale of loans.
(2)
Changes in fair value of the FDIC clawback liability are recorded in general and administrative expense.
(3)
With the exception of changes in the indemnification assets, net realized and unrealized gains (losses) on freestanding derivatives are included in other noninterest income. Changes in the fair value of the indemnification assets are recorded in general and administrative expense.
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]
The characteristics used in estimating the fair value of the MSR portfolio at June 30, 2012 and December 31, 2011 are as follows:
 
June 30, 2012
 
December 31, 2011
Unpaid principal balance
$
45,146,000

 
$
47,818,000

Gross weighted-average coupon
4.81
%
 
4.98
%
Weighted-average servicing fee
0.30
%
 
0.31
%
Expected prepayment speed (1)
13.89
%
 
12.74
%

(1) The prepayment speed assumptions includes a blend of prepayment speeds that are influenced by mortgage interest rates, the current macroeconomic environment and borrower behaviors and may vary over the expected life of the asset.

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a recurring basis at June 30, 2012:
Level 3 Assets
 
Fair 
Value    
 
Valuation Technique
 
Unobservable Inputs
 
Significant Unobservable Input Value
FDIC clawback liability
 
$
46,738

 
Discounted cash flow
 
Servicing cost
 
$6,272
-
$14,219
(1) 
Indemnification asset
 
$
9,383

 
Discounted cash flow
 
Reinstatement rate
 
5.96%
-
67.90%
(2) 
 
 
 
 
 
 
Loss duration (in months)
 
8
-
45
(2) 
 
 
 
 
 
 
Loss severity (3)
 
2.37%
-
16.64%
(2) 
(1)
The range represents the sum of the highest and lowest servicing cost values for all tranches that we use in our valuation process. The servicing cost represents 1% of projected unpaid principal balance (UPB) of the underlying loans.
(2)
The range represents the sum of the highest and lowest values for all tranches that we use in our valuation process.
Fair Value, Option, Quantitative Disclosures [Table Text Block]
Following is information on loans held for sale reported under the fair value option at June 30, 2012 and December 31, 2011:
 
Total    
 
Nonaccrual    
June 30, 2012
 
 
 
Fair value carrying amount
$
1,105,985

 
$

Aggregate unpaid principal balance
1,052,714

 

Fair value carrying amount less aggregate unpaid principal
$
53,271

 
$

December 31, 2011
 
 
 
Fair value carrying amount
$
777,280

 
$
2,129

Aggregate unpaid principal balance
747,667

 
2,466

Fair value carrying amount less aggregate unpaid principal
$
29,613

 
$
(337
)
Differences between the fair value carrying amount and the aggregate unpaid principal balance include changes in fair value recorded at and subsequent to funding, gains and losses on the related loan commitment prior to funding and premiums or discounts on acquired loans.
The net gain from initial measurement of the above loans and subsequent changes in fair value was $111,464 and $176,173 for the three and six months ended June 30, 2012, respectively, and $38,569 and $54,384 for the three and six months ended June 30, 2011, respectively, is included in gain on sale of loans. An immaterial portion of the change in fair value was attributable to changes in instrument-specific credit risk.
Fair Value Measurements, Nonrecurring [Table Text Block]
Certain assets and liabilities are measured at fair value on a non-recurring basis and therefore are not included in the tables above. These measurements primarily result from assets carried at the lower of cost or fair value or from impairment of individual assets. The carrying value of assets measured at fair value on a non-recurring basis and held at June 30, 2012 and December 31, 2011 and related change in fair value are as follows:
 
Level 1        
 
Level 2        
 
Level 3        
 
Total        
 
Change in Fair Value      
June 30, 2012
 
 
 
 
 
 
 
 
 
Collateral-dependent loans
$

 
$

 
$
29,582

 
$
29,582

 
$
1,999

Other real estate owned

 
1,200

 
19,734

 
20,934

 
3,885

Mortgage servicing rights (1)

 

 
373,735

 
373,735

 
30,135

December 31, 2011
 
 
 
 
 
 
 
 
 
Loans held for sale
$

 
$
13,010

 
$

 
$
13,010

 
$
1,385

Collateral-dependent loans

 

 
62,183

 
62,183

 
11,831

Other real estate owned

 

 
46,578

 
46,578

 
10,389

Mortgage servicing rights (1)

 

 
445,195

 
445,195

 
39,455

    
(1)
The fair value for mortgage servicing rights represents the value of the impaired strata.
Fair Value, by Balance Sheet Grouping [Table Text Block]
The following table presents the carrying amount, fair value, and placement in the fair value hierarchy of the Company’s financial instruments as of June 30, 2012 and December 31, 2011. This table excludes financial instruments with a short-term or without a stated maturity, prevailing market rates and limited credit risk, where carrying amounts approximate fair value. For financial assets such as cash and due from banks, FHLB restricted stock, and other investments, the carrying amount is a reasonable estimate of fair value. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings and money market deposits, the carrying amount is a reasonable estimate of fair value as these liabilities have no stated maturity. 
 
June 30, 2012
 
Carrying
Amount
 
Estimated
Fair Value
 
Level 1
 
Level 2
 
Level 3
Financial assets:
 
 
 
 
 
 
 
 
 
Investment securities:
 
 
 
 
 
 
 
 
 
Held to maturity
$
190,615

 
$
196,382

 
$

 
$
196,382

 
$

Loans held for sale (1)
2,072,612

 
2,171,991

 

 
2,171,991

 

Loans held for investment (2)
7,030,992

 
7,111,132

 

 

 
7,111,132

Financial liabilities:
 
 
 
 
 
 
 
 
 
Time deposits
$
2,894,148

 
$
2,930,669

 
$

 
$
2,930,669

 
$

Other borrowings
2,503,636

 
2,545,991

 

 
2,545,991

 

Trust preferred securities
103,750

 
78,274

 

 

 
78,274

 
December 31, 2011
 
Carrying
Amount
 
Estimated
Fair Value
Financial assets:
 
 
 
Investment securities:
 
 
 
Held to maturity
$
189,518

 
$
194,350

Loans held for sale
2,725,286

 
2,811,917

Loans held for investment (2)
5,856,781

 
5,862,053

Financial liabilities:
 
 
 
Deposits
$
10,265,763

 
$
10,299,977

Other borrowings
1,257,879

 
1,215,209

Trust preferred securities
103,750

 
71,597

(1)
The carrying value of loans held for sale excludes $1,105,985 in loans measured at fair value on a recurring basis as of June 30, 2012.
(2)
The carrying value of loans held for investment is net of the allowance for loan loss of $73,233 and $73,999 as of June 30, 2012 and December 31, 2011, respectively. In addition, the carrying values exclude $677,045 and $584,735 of lease financing receivables as of June 30, 2012 and December 31, 2011, respectively.