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 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 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     (5,115) 0
Total gains/losses for the period:        
Included in earnings     7,659 6,244
Included in OCI     0 0
Purchases/originations     0 0
Sales     0 0
Repayments     0 0
Issues     0 0
Settlements     0 (1,820)
Closing balance $ 8,600 $ 7,784 8,600 7,784
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     7,759 6,244
MSRs        
Assets Level 3 Roll Forward:        
Opening balance 13,105 20,681 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 (677) (2,616) (5,157) (4,721)
Included in OCI 0 0 0 0
Purchases 0 0 0 0
Sales 0 0 0 0
Repayments 0 0 0 0
Issuances 0 0 0 0
Settlements 0 0 0 0
Closing balance 12,428 18,065 12,428 18,065
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 (677) (2,616) (5,157) (4,721)
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0 0    
Transfers out of Level 3 0 0    
Derivative Instruments [Member]        
Assets Level 3 Roll Forward:        
Opening balance 12,751 5,166    
Total gains/losses for the period:        
Included in earnings (2,459) 3,023    
Included in OCI 0 0    
Purchases 0 0    
Sales 0 0    
Repayments 0 0    
Issuances 0 0    
Settlements 0 (405)    
Closing balance 8,600 7,784 8,600 7,784
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 (2,459) 3,023    
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0 0    
Transfers out of Level 3 1,692 0    
Municipal securities        
Assets Level 3 Roll Forward:        
Opening balance 2,237,975 1,716,845 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 4,166 0 4,166 0
Included in OCI (28,272) 3,514 (8,946) 2,199
Purchases 953,639 426,501 1,237,546 768,529
Sales 0 0 (36,657) 0
Repayments 0 0 0 0
Issuances 0 0 0 0
Settlements (262,235) (196,304) (386,387) (237,765)
Closing balance 2,905,273 1,950,556 2,905,273 1,950,556
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 3,514 0 2,199
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0 0    
Transfers out of Level 3 0 0    
Private label CMO        
Assets Level 3 Roll Forward:        
Opening balance   29,429   30,464
Transfers into Level 3       0
Transfers out of Level 3 (1)       0
Total gains/losses for the period:        
Included in earnings   20   47
Included in OCI   1,309   1,832
Purchases   0   0
Sales   (30,077)   (30,077)
Repayments   0   0
Issuances   0   0
Settlements   (681)   (2,266)
Closing balance   0   0
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   0
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3   0    
Transfers out of Level 3   0    
Asset-backed Securities        
Assets Level 3 Roll Forward:        
Opening balance 71,379 102,071 100,337 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 0 (2,440) 2 (2,435)
Included in OCI 2,875 1,997 3,549 23,860
Purchases 10 0 10 0
Sales 0 0 (27,794) 0
Repayments 0 0 0 0
Issuances 0 0 0 0
Settlements (445) (456) (2,285) (2,991)
Closing balance 73,819 101,172 73,819 101,172
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 1,997 2 23,860
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0 0    
Transfers out of Level 3 0 0    
Automobile        
Assets Level 3 Roll Forward:        
Opening balance 925 3,998 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 (249) (142) (249) (497)
Included in OCI 0 0 0 0
Purchases 56,469 0 56,469 0
Sales 0 0 0 0
Repayments (3,860) (1,293) (4,683) (7,530)
Issuances 0 0 0 0
Settlements 0 0 0 0
Closing balance 53,285 2,563 53,285 2,563
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 (142) $ 0 $ (497)
Net Derivative Instruments Level 3 Roll Forward:        
Transfers into Level 3 0 0    
Transfers out of Level 3 $ 0 $ 0