|
Investments (Details Textual) (USD $)
|
6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2013
Issuer
DebtSecurities
InvestmentAffiliates
|
Dec. 31, 2012
Issuer
DebtSecurities
|
Jun. 30, 2013
Tax Credit Partnerships Almost 100% Ownership [Member]
|
Jun. 30, 2013
Tax Credit Partnerships Less Than 20% Ownership [Member]
|
Jun. 30, 2013
Maximum [Member]
|
Jun. 30, 2013
Maximum [Member]
Tax Credit Partnerships Almost 100% Ownership [Member]
|
Jun. 30, 2013
Maximum [Member]
Tax Credit Partnerships Less Than 20% Ownership [Member]
|
Jun. 30, 2013
Debt Securities [Member]
Revolving Credit Agreement [Member]
Securities Pledged as Collateral [Member]
|
Dec. 31, 2012
Debt Securities [Member]
Revolving Credit Agreement [Member]
Securities Pledged as Collateral [Member]
|
|
| Investment (Textual) [Abstract] | |||||||||
| Number of investment affiliates exceeding shareholder's equity ten percent threshold limit | 0 | ||||||||
| Threshold limit of investments based on shareholders' equity | 10.00% | ||||||||
| Securities on deposit with state insurance departments | $ 39,000,000 | ||||||||
| Securities held as collateral | 196,500,000 | 196,200,000 | |||||||
| Business owned life insurance cost | 33,000,000 | ||||||||
| Period for federal home loan bank stock liquidation process | 5 years | ||||||||
| Number of Tax Credit Partnerships Almost 100% Ownership Percentage | 2 | ||||||||
| Percentage Ownership | 100.00% | 20.00% | |||||||
| Carrying Value | 191,749,000 | 121,049,000 | 64,800,000 | 82,400,000 | |||||
| Number of debt securities in unrealized loss position | 939 | 142 | |||||||
| Debt securities in unrealized loss position as percentage of total debt securities held | 32.60% | 5.70% | |||||||
| Number of issuers in unrealized loss position | 543 | 131 | |||||||
| Single greatest unrealized loss position | 600,000 | 600,000 | |||||||
| Second greatest unrealized loss position | $ 400,000 | $ 200,000 | |||||||