Quarterly report pursuant to Section 13 or 15(d)

AVAILABLE-FOR-SALE AND OTHER SECURITIES - Collateralized Debt Obligation (Details)

v3.7.0.1
AVAILABLE-FOR-SALE AND OTHER SECURITIES - Collateralized Debt Obligation (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]    
Unrealized Gross Losses $ (188,920) $ (261,644)
Pooled Trust Preferred    
Schedule of Available-for-sale Securities [Line Items]    
Par Value 91,009 137,197
Amortized Cost 59,012 101,210
Fair Value 42,575 76,003
Unrealized Gross Losses (16,437) $ (25,207)
Pooled Trust Preferred | MM Comm III    
Schedule of Available-for-sale Securities [Line Items]    
Par Value 4,509  
Amortized Cost 4,308  
Fair Value 3,581  
Unrealized Gross Losses $ (727)  
Actual Deferrals and Defaults as Percent of Original Collateral 5.00%  
Expected Defaults as Percent of Remaining Performing Collateral 5.00%  
Excess Subordination 39.00%  
Pooled Trust Preferred | Pre TSL IX    
Schedule of Available-for-sale Securities [Line Items]    
Par Value $ 5,000  
Amortized Cost 3,955  
Fair Value 3,275  
Unrealized Gross Losses $ (680)  
Actual Deferrals and Defaults as Percent of Original Collateral 16.00%  
Expected Defaults as Percent of Remaining Performing Collateral 8.00%  
Excess Subordination 11.00%  
Pooled Trust Preferred | Pre TSL XI    
Schedule of Available-for-sale Securities [Line Items]    
Par Value $ 25,000  
Amortized Cost 19,239  
Fair Value 15,867  
Unrealized Gross Losses $ (3,372)  
Actual Deferrals and Defaults as Percent of Original Collateral 14.00%  
Expected Defaults as Percent of Remaining Performing Collateral 8.00%  
Excess Subordination 14.00%  
Pooled Trust Preferred | Reg Diversified    
Schedule of Available-for-sale Securities [Line Items]    
Par Value $ 25,500  
Amortized Cost 510  
Fair Value 510  
Unrealized Gross Losses $ 0  
Actual Deferrals and Defaults as Percent of Original Collateral 32.00%  
Expected Defaults as Percent of Remaining Performing Collateral 8.00%  
Excess Subordination 0.00%  
Pooled Trust Preferred | Tropic III    
Schedule of Available-for-sale Securities [Line Items]    
Par Value $ 31,000  
Amortized Cost 31,000  
Fair Value 19,342  
Unrealized Gross Losses $ (11,658)  
Actual Deferrals and Defaults as Percent of Original Collateral 16.00%  
Expected Defaults as Percent of Remaining Performing Collateral 7.00%  
Excess Subordination 41.00%