Quarterly report pursuant to Section 13 or 15(d)

BUSINESS COMBINATIONS BUSINESS COMBINATIONS (Details)

v3.4.0.3
BUSINESS COMBINATIONS BUSINESS COMBINATIONS (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Sep. 30, 2016
USD ($)
$ / shares
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]      
Goodwill   $ 676,869 $ 676,869
Subsequent Event [Member] | Scenario, Forecast [Member] | FirstMerit Bank [Member]      
Business Acquisition [Line Items]      
Business Combination, Consideration Transferred $ 3,400,000    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]      
Business Acquisition, Assets Reported by Acquired Entity for Last Annual Period $ 25,500,000    
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Per Share 1.72    
Business Combination, Consideration Transferred, Cash Paid for Each Share of Acquired Entity's Shares | $ / shares $ 5.00