Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUES OF ASSETS AND LIABILITIES - Level 3 Roll Forward (Details)

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FAIR VALUES OF ASSETS AND LIABILITIES - Level 3 Roll Forward (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Net Derivative Instruments Level 3 Roll Forward:        
Opening balance     $ 6,056 $ 3,360
Transfers into Level 3     0 0
Transfers out of Level 3     (3,423) 0
Total gains/losses for the period:        
Included in earnings     10,118 3,221
Included in OCI     0 0
Purchases/originations     0 0
Sales     0 0
Repayments     0 0
Issues     0 0
Settlements     0 (1,415)
Closing balance $ 12,751 $ 5,166 12,751 5,166
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date     10,218 3,221
MSRs        
Assets Level 3 Roll Forward:        
Opening balance 14,819 20,455 17,585 22,786
Transfers into Level 3     0 0
Transfers out of Level 3 (1)     0 0
Total gains/losses for the period:        
Included in earnings (1,714) 226 (4,480) (2,105)
Included in OCI 0 0 0
Purchases 0 0 0
Sales 0 0 0
Repayments 0 0 0
Issuances 0 0 0
Settlements 0 0 0
Closing balance 13,105 20,681 13,105 20,681
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date (1,714) 226 (4,480) (2,105)
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0    
Transfers out of Level 3 0    
Derivative Instruments [Member]        
Assets Level 3 Roll Forward:        
Opening balance 10,347 7,825    
Total gains/losses for the period:        
Included in earnings 4,912 (1,780)    
Included in OCI 0    
Purchases 0    
Sales 0    
Repayments 0    
Issuances 0    
Settlements 0 (879)    
Closing balance 12,751 5,166 12,751 5,166
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date 4,912 (1,780)    
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0    
Transfers out of Level 3 2,508    
Municipal securities        
Assets Level 3 Roll Forward:        
Opening balance 2,281,743 1,635,808 2,095,551 1,417,593
Transfers into Level 3     0 0
Transfers out of Level 3 (1)     0 0
Total gains/losses for the period:        
Included in earnings 0 0 0
Included in OCI 7,486 2,677 19,326 (1,315)
Purchases 46,457 99,031 283,907 342,028
Sales (36,657) (36,657) 0
Repayments 0 0 0
Issuances 0 0 0
Settlements (61,054) (20,671) (124,152) (41,461)
Closing balance 2,237,975 1,716,845 2,237,975 1,716,845
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date 0 2,677 0 (1,315)
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0    
Transfers out of Level 3 0    
Private label CMO        
Assets Level 3 Roll Forward:        
Opening balance   30,072   30,464
Transfers into Level 3       0
Transfers out of Level 3 (1)       0
Total gains/losses for the period:        
Included in earnings   11 0 27
Included in OCI   505   523
Purchases     0
Sales     0
Repayments     0
Issuances     0
Settlements   (1,159)   (1,585)
Closing balance   29,429   29,429
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date   505   523
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3      
Transfers out of Level 3      
Asset-backed Securities        
Assets Level 3 Roll Forward:        
Opening balance 94,329 89,155 100,337 82,738
Transfers into Level 3     0 0
Transfers out of Level 3 (1)     0 0
Total gains/losses for the period:        
Included in earnings 2 6 2 6
Included in OCI 5,842 14,351 674 21,863
Purchases 0 0 0
Sales (27,794) (27,794) 0
Repayments 0 0 0
Issuances 0 0 0
Settlements (1,000) (1,441) (1,840) (2,536)
Closing balance 71,379 102,071 71,379 102,071
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date 2 14,351 2 21,863
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0    
Transfers out of Level 3 0    
Automobile Loan        
Assets Level 3 Roll Forward:        
Opening balance 1,216 6,495 1,748 10,590
Transfers into Level 3     0 0
Transfers out of Level 3 (1)     0 0
Total gains/losses for the period:        
Included in earnings 0 (213) 0 (426)
Included in OCI 0 0 0
Purchases 0 0 (6,166)
Sales 0 0 0
Repayments (291) (2,284) (823) 0
Issuances 0 0 0
Settlements 0 0 0
Closing balance 925 3,998 925 3,998
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date 0 (213) $ 0 $ (426)
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0    
Transfers out of Level 3 $ 0