Quarterly report pursuant to Section 13 or 15(d)

INTANGIBLE ASSETS (Narrative) (Details)

v3.4.0.3
INTANGIBLE ASSETS (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2015
Jan. 01, 2014
Finite-Lived Intangible Assets [Line Items]          
Intangible assets, amortization expense $ 1,880   $ 2,222 $ 8,400  
Impairment charges   $ 0      
Goodwill $ 293,522     $ 293,522  
Core Deposits [Member] | Minimum [Member]          
Finite-Lived Intangible Assets [Line Items]          
Intangible assets, amortization period 4 years        
Core Deposits [Member] | Maximum [Member]          
Finite-Lived Intangible Assets [Line Items]          
Intangible assets, amortization period 14 years        
StellarOne Bank [Member]          
Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets         $ 29,600
Goodwill         $ 234,100