Annual report pursuant to Section 13 and 15(d)

Loans and Leases - Schedule of Changes in Carrying Value of PCI Loans (Detail)

v3.6.0.2
Loans and Leases - Schedule of Changes in Carrying Value of PCI Loans (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Carrying Amount      
Balance at beginning of period $ 3,140,381    
Balance at end of period 3,812,340 $ 3,140,381  
PCI Loans [Member]      
Carrying Amount      
Balance at beginning of period 14,573 43,475 $ 0
Additions from CBI Acquisition at August 31, 2014 0 0 65,346
Accretion 1,144 2,956 1,448
Payments received (7,138) (31,215) (17,803)
Disposal/transfers to OREO (977) (3,772) 4,490
Change in expected cash flows, net 0 0 0
Provision for credit losses (664) (4,415) (1,026)
Balance at end of period 8,892 14,573 43,475
Accretable Yield      
Balance at beginning of period (5,944) (11,025) 0
Additions from CBI Acquisition at August 31, 2014 0 0 (10,856)
Accretion 1,144 2,956 1,448
Payments received 0 0 0
Disposal/transfers to OREO 0 0 0
Change in expected cash flows, net (877) 2,125 (1,617)
Provision for credit losses 0 0 0
Balance at end of period $ (5,677) $ (5,944) $ (11,025)