Short-Term Borrowings and Long-Term Debt (Subordinated Debt) (Details) (USD $)	12 Months Ended				0 Months Ended			3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 21, 2011 CommunityOne [Member]	Oct. 21, 2011 CommunityOne [Member] Nonvoting, nonconvertible, nonredeemable cumulative preferred stock [Member]	Oct. 21, 2011 CommunityOne [Member] Nonvoting, nonconvertible, nonredeemable cumulative preferred stock [Member] Retained earnings [Member]	Oct. 21, 2011 CommunityOne [Member] Subordinated debt [Member]	Mar. 31, 2011 CommunityOne [Member] Subordinated debt [Member]	Dec. 31, 2010 CommunityOne [Member] Subordinated debt [Member]	Dec. 31, 2010 CommunityOne [Member] Subordinated debt [Member] Nonvoting, nonconvertible, nonredeemable cumulative preferred stock [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt settled							$ 2,500,000
Portion of cash settlement price, percentage of aggregate principal amount							35.00%
Portion of cash settlement price, percentage of unpaid and accrued interest							100.00%
Gain on extinguishment of debt	0	0	1,625,000				1,600,000
Debt amount converted								5,000,000	7,500,000
Amount of preferred stock debt was converted into										7,500,000
Preferred stock repurchased, liquidation preference					12,500,000
Portion of repurchase price, percentage of aggregate liquidation preference					25.00%
Portion of repurchase price, percentage of unpaid and accrued dividends					100.00%
Increase in equity resulting from preferred stock repurchased						9,400,000
Subordinated debt				$ 0