Quarterly report pursuant to Section 13 or 15(d)

Available-for-Sale and Other Securities (Trust Preferred) (Details 3)

v2.4.0.6
Available-for-Sale and Other Securities (Trust Preferred) (Details 3) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Trust Preferred Securities Data [Line Items]      
Amortized Cost $ 332,768 $ 342,867  
Fair Value 195,928 194,062  
Available For Sales Securities Gross Unrealized Losses 147,870 165,080 226,495
Pooled Trust Preferred [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 268,124    
Amortized Cost 199,144    
Fair Value 77,034    
Available For Sales Securities Gross Unrealized Losses (122,110)    
Pooled Trust Preferred [Member] | Alesco II [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 41,646    
Amortized Cost 31,102    
Fair Value 10,228    
Available For Sales Securities Gross Unrealized Losses (20,874)    
Lowest Credit Rating C    
Number of Issuers Currently Performing 31    
Number of Issuers Currently Remaining 36    
Actual Deferrals and Defaults as Percent of Original Collateral 11.00%    
Expected Defaults as Percent of Remaining Performing Collateral 15.00%    
Excess Subordination 0.00%    
Pooled Trust Preferred [Member] | Alesco IV [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 21,176    
Amortized Cost 8,243    
Fair Value 440    
Available For Sales Securities Gross Unrealized Losses (7,803)    
Lowest Credit Rating C    
Number of Issuers Currently Performing 31    
Number of Issuers Currently Remaining 42    
Actual Deferrals and Defaults as Percent of Original Collateral 17.00%    
Expected Defaults as Percent of Remaining Performing Collateral 23.00%    
Excess Subordination 0.00%    
Pooled Trust Preferred [Member] | ICONS [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 20,000    
Amortized Cost 20,000    
Fair Value 12,482    
Available For Sales Securities Gross Unrealized Losses (7,518)    
Lowest Credit Rating BB    
Number of Issuers Currently Performing 25    
Number of Issuers Currently Remaining 26    
Actual Deferrals and Defaults as Percent of Original Collateral 3.00%    
Expected Defaults as Percent of Remaining Performing Collateral 15.00%    
Excess Subordination 53.00%    
Pooled Trust Preferred [Member] | I-Pre TSL II [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 31,736    
Amortized Cost 31,651    
Fair Value 21,746    
Available For Sales Securities Gross Unrealized Losses (9,905)    
Lowest Credit Rating A    
Number of Issuers Currently Performing 24    
Number of Issuers Currently Remaining 25    
Actual Deferrals and Defaults as Percent of Original Collateral 3.00%    
Expected Defaults as Percent of Remaining Performing Collateral 13.00%    
Excess Subordination 74.00%    
Pooled Trust Preferred [Member] | MM Comm III [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 7,425    
Amortized Cost 7,094    
Fair Value 4,040    
Available For Sales Securities Gross Unrealized Losses (3,054)    
Lowest Credit Rating CC    
Number of Issuers Currently Performing 5    
Number of Issuers Currently Remaining 10    
Actual Deferrals and Defaults as Percent of Original Collateral 7.00%    
Expected Defaults as Percent of Remaining Performing Collateral 14.00%    
Excess Subordination 33.00%    
Pooled Trust Preferred [Member] | Pre TSL IX [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 5,000    
Amortized Cost 3,955    
Fair Value 1,353    
Available For Sales Securities Gross Unrealized Losses (2,602)    
Lowest Credit Rating C    
Number of Issuers Currently Performing 32    
Number of Issuers Currently Remaining 48    
Actual Deferrals and Defaults as Percent of Original Collateral 28.00%    
Expected Defaults as Percent of Remaining Performing Collateral 16.00%    
Excess Subordination 3.00%    
Pooled Trust Preferred [Member] | Pre TSL X [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 17,955    
Amortized Cost 9,915    
Fair Value 4,029    
Available For Sales Securities Gross Unrealized Losses (5,886)    
Lowest Credit Rating C    
Number of Issuers Currently Performing 33    
Number of Issuers Currently Remaining 53    
Actual Deferrals and Defaults as Percent of Original Collateral 42.00%    
Expected Defaults as Percent of Remaining Performing Collateral 26.00%    
Excess Subordination 0.00%    
Pooled Trust Preferred [Member] | Pre TSL XI [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 25,691    
Amortized Cost 22,667    
Fair Value 6,556    
Available For Sales Securities Gross Unrealized Losses (16,111)    
Lowest Credit Rating C    
Number of Issuers Currently Performing 42    
Number of Issuers Currently Remaining 63    
Actual Deferrals and Defaults as Percent of Original Collateral 29.00%    
Expected Defaults as Percent of Remaining Performing Collateral 19.00%    
Excess Subordination 0.00%    
Pooled Trust Preferred [Member] | Pre TSL XIII [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 28,495    
Amortized Cost 22,703    
Fair Value 6,810    
Available For Sales Securities Gross Unrealized Losses (15,893)    
Lowest Credit Rating C    
Number of Issuers Currently Performing 40    
Number of Issuers Currently Remaining 63    
Actual Deferrals and Defaults as Percent of Original Collateral 33.00%    
Expected Defaults as Percent of Remaining Performing Collateral 24.00%    
Excess Subordination 0.00%    
Pooled Trust Preferred [Member] | Reg Diversified [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 25,500    
Amortized Cost 6,908    
Fair Value 393    
Available For Sales Securities Gross Unrealized Losses (6,515)    
Lowest Credit Rating D    
Number of Issuers Currently Performing 24    
Number of Issuers Currently Remaining 44    
Actual Deferrals and Defaults as Percent of Original Collateral 45.00%    
Expected Defaults as Percent of Remaining Performing Collateral 17.00%    
Excess Subordination 0.00%    
Pooled Trust Preferred [Member] | Soloso [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 12,500    
Amortized Cost 3,906    
Fair Value 770    
Available For Sales Securities Gross Unrealized Losses (3,136)    
Lowest Credit Rating C    
Number of Issuers Currently Performing 41    
Number of Issuers Currently Remaining 65    
Actual Deferrals and Defaults as Percent of Original Collateral 29.00%    
Expected Defaults as Percent of Remaining Performing Collateral 18.00%    
Excess Subordination 0.00%    
Pooled Trust Preferred [Member] | Tropic III [Member]
      
Trust Preferred Securities Data [Line Items]      
Par Value 31,000    
Amortized Cost 31,000    
Fair Value 8,187    
Available For Sales Securities Gross Unrealized Losses $ (22,813)    
Lowest Credit Rating CC    
Number of Issuers Currently Performing 22    
Number of Issuers Currently Remaining 43    
Actual Deferrals and Defaults as Percent of Original Collateral 42.00%    
Expected Defaults as Percent of Remaining Performing Collateral 32.00%    
Excess Subordination 26.00%