Fair Value of Assets and Liabilities (Details Textual) (USD $)	6 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014 Security	Jun. 30, 2013 Security	Dec. 31, 2013	Jun. 30, 2014 Trust preferred securities	Dec. 31, 2013 Trust preferred securities	Jun. 30, 2014 Trust preferred securities Minimum	Dec. 31, 2013 Trust preferred securities Minimum	Jun. 30, 2014 Trust preferred securities Maximum	Dec. 31, 2013 Trust preferred securities Maximum
Fair Value (Additional Textual) [Abstract]
Number of debt securities with other-than-temporary impairment	1	2
Minimum effective discount rate on overall basis	11.19%
Maximum effective discount rate on overall basis	16.40%
Minimum assets of trust preferred securities issued by institution	$ 15,000,000,000
Maturity period of short-term borrowings	one year or less
Period of swap rate	25 years
OTTI recognized value reflecting the estimated fair value of the securities			$ 2,000,000
Fair Value (Textual) [Abstract]
Period frequency of projected prepayment rate				1 year	1 year
Projected Prepayments, minimum fixed rate coupons				8.00%	8.00%
Projected Prepayments, percentage of fair value input for banks				1.00%	1.00%
Projected prepayment, percentage of fair value for collateral by REITs				0.00%	0.00%
Projected prepayment, percentage of fair value for collateral for insurance companies				2.00%	2.00%
Annually projected defaults percentage for healthy banks				2.00%	2.00%
Period frequency of projected default rate				2 years	2 years
Projected defaults rate for healthy banks				0.36%	0.36%
Projected Recoveries, percentage for insurance companies, REITs and insolvent banks				0.00%	0.00%
Projected recovery, percentage for projected bank deferrals				10.00%	10.00%
Projected Bank Deferrals lagged				2 years	2 years
Fair value input discount rate						11.38%	5.65%	16.42%	17.85%