XML 75 R54.htm IDEA: XBRL DOCUMENT v3.10.0.1
SECURITIES AVAILABLE FOR SALE - Narrative (Detail) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Debt Securities, Available-for-sale [Line Items]      
Current fair value of equity securities recognized in other investments $ 17,997,000 $ 14,837,000  
Other-than-temporary impairment charge 0 0 $ 500,000
Available-for-sale Securities      
Debt Securities, Available-for-sale [Line Items]      
AFS securities pledged as collateral 157,200,000 140,900,000  
Accounting Standards Update 2016-01      
Debt Securities, Available-for-sale [Line Items]      
Recognized gain from adoption of new accounting pronouncment 77,000    
Current fair value of equity securities recognized in other investments 2,700,000 $ 2,600,000  
Retained Earnings | Accounting Standards Update 2016-01      
Debt Securities, Available-for-sale [Line Items]      
Cumulative effect adjustment of new accounting pronouncement adoption $ 900,000