Fair Value of Assets and Liabilities (Details 7) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2014		Dec. 31, 2013
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Total debt securities, Fair value	$ 170,913		$ 160,886
Impaired Loans
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Appraisal Adjustments	12.00%		21.00%
Liquidation Expenses	6.00%		6.00%
Impaired Loans | Minimum
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Appraisal Adjustments	10.00%
Liquidation Expenses	1.00%
Impaired Loans | Maximum
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Appraisal Adjustments	30.00%
Liquidation Expenses	24.00%
Appraisal Of Collateral | Impaired Loans
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Total debt securities, Fair value	5,729		5,251
Valuation Technique	Appraisal of Collateral	[1]	Appraisal of Collateral	[1]
Projected Prepayments
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Description of Inputs	1) Trust preferred securities issued by banks subject to Dodd-Frank's phase-out of trust preferred securities from Tier 1 Capital. All fixed rate within one year; variable rate at increasing intervals depending on spread.2) Trust preferred securities issued by healthy, well capitalized banks that have fixed rate coupons greater than 8%.3) 1% annually for all other fixed rate issues and all variable rate issues.4) Zero for collateral issued by REITs and 2% for insurance companies.		1) Trust preferred securities issued by banks subject to Dodd-Frank's phase-out of trust preferred securities from Tier 1 Capital. All fixed rate within one year; variable rate at increasing intervals depending on spread.2) Trust preferred securities issued by healthy, well capitalized banks that have fixed rate coupons greater than 8%.3) 1% annually for all other fixed rate issues and all variable rate issues.4) Zero for collateral issued by REITs and 2% for insurance companies.
Projected Defaults
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Description of Inputs	1) All deferring issuers that do not meet the criteria for curing, as described below, are projected to default immediately.2) Banks with high, near team default risk are identified using a CAMELS model, and projected to default immediately. Healthy banks are projected to default at a rate of 2% annually for 2 years, and 0.36% annually thereafter.3) Insurance and REIT defaults are projected according to the historical default rates exhibited by companies with the same credit ratings. Historical default rates are doubled in each of the first two years of the projection to account for current economic conditions. Unrated issuers are assumed to have CCC- ratings.		1) All deferring issuers that do not meet the criteria for curing, as described below, are projected to default immediately.2) Banks with high, near team default risk are identified using a CAMELS model, and projected to default immediately. Healthy banks are projected to default at a rate of 2% annually for 2 years, and 0.36% annually thereafter.3) Insurance and REIT defaults are projected according to the historical default rates exhibited by companies with the same credit ratings. Historical default rates are doubled in each of the first two years of the projection to account for current economic conditions. Unrated issuers are assumed to have CCC- ratings.
Projected Cures
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Description of Inputs	1) Deferring issuers that have definitive agreements to either be acquired or recapitalized.		1) Deferring issuers that have definitive agreements to either be acquired or recapitalized.
Projected Recoveries
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Description of Inputs	1) Zero for insurance companies, REITs and insolvent banks, and 10% for projected bank deferrals lagged 2 years.		1) Zero for insurance companies, REITs and insolvent banks, and 10% for projected bank deferrals lagged 2 years.
Discount Rates
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Description of Inputs	1) Ranging from ~5.65% to ~17.85%, depending on each bond's seniority and remaining subordination after projected losses.		1) Ranging from ~5.65% to ~17.85%, depending on each bond's seniority and remaining subordination after projected losses.
Trust preferred securities
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Total debt securities, Fair value	680		10,136
Trust preferred securities | Minimum
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Fair value input discount rate	11.38%		5.65%
Trust preferred securities | Maximum
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Fair value input discount rate	16.42%		17.85%
Trust preferred securities | Discounted Cash Flow
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Total debt securities, Fair value	680		10,136
Valuation Technique	Discounted Cash Flow		Discounted Cash Flow
Other Real Estate Owned
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Appraisal Adjustments	0.00%		0.00%
Other Real Estate Owned | Appraisal Of Collateral
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Total debt securities, Fair value			$ 33
Valuation Technique			Appraisal of Collateral	[1],[2]

[1] Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various Level 3 inputs which are not identifiable.

[2] Includes qualitative adjustments by management and estimated liquidation expenses.