Atlantic Union Bankshares Corporation Quarterly report pursuant to Section 13 or 15(d)

INTANGIBLE ASSETS (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Jan. 01, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible assets, amortization expense	$ 2,222us-gaap_AmortizationOfIntangibleAssets	$ 2,616us-gaap_AmortizationOfIntangibleAssets
Impairment charges	0
Core deposit intangibles, net	29,533us-gaap_FiniteLivedIntangibleAssetsNet	38,935us-gaap_FiniteLivedIntangibleAssetsNet	31,755us-gaap_FiniteLivedIntangibleAssetsNet
Goodwill	293,522us-gaap_Goodwill		293,522us-gaap_Goodwill
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, amortization expense	2,200	2,600	9,800
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]
Core deposit intangibles, net				29,600
Goodwill				$ 234,100