XML 123 R111.htm IDEA: XBRL DOCUMENT v3.8.0.1
GOODWILL AND OTHER INTANGIBLES - Gross Amount and Accumulated Amortization of Other Intangible Assets (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Jun. 30, 2012
Goodwill And Intangible Assets Disclosure [Abstract]      
Finite Lived Intangible Assets Amortization Expense Year Two $ 3,088    
Finite Lived Intangible Assets Amortization Expense Year Three 2,851    
Finite Lived Intangible Assets Amortization Expense Year Four 2,658    
Finite Lived Intangible Assets Amortization Expense After Year Five 1,150    
Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year 2,585    
Finite Lived Intangible Assets Amortization Expense Year Five 915    
Core Deposits [Member]      
Finite Lived Intangible Assets [Line Items]      
Gross amount 51,664 $ 51,664  
Accumulated amortization [1] (46,580) (46,186)  
Net carrying amount $ 5,084 $ 5,478  
Remaining amortization period 6 years 9 months 18 days 7 years  
Purchased Credit Card Relationship Intangible [Member]      
Finite Lived Intangible Assets [Line Items]      
Gross amount $ 24,465 $ 24,465 $ 24,500
Accumulated amortization [2] (17,039) (16,465)  
Net carrying amount $ 7,426 $ 8,000  
Remaining amortization period 3 years 7 months 6 days 3 years 10 months 24 days  
Customer Related Intangible Assets [Member]      
Finite Lived Intangible Assets [Line Items]      
Gross amount $ 1,067 $ 1,067  
Accumulated amortization [3] (330) (292)  
Net carrying amount $ 737 $ 775  
Remaining amortization period 4 years 8 months 12 days 5 years  
[1]
(1) For the quarters ended March 31, 2018 and 2017, the amortization expense of core deposit intangibles amounted to $0.4 million and $0.5 million, respectively.
[2]
(2) For each of the quarters ended March 31, 2018 and 2017, the amortization expense of the purchased credit card relationship intangible amounted to $0.6 million.
[3]
(3) For each of the quarters ended March 31, 2018 and 2017, the amortization expense of the insurance customer relationship intangible amounted to $38 thousand.