Investments - Textual (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities
Available-for-sale Securities Pledged as Collateral	$ 91,534,000
Available-for-sale Securities, Gross Unrealized Gain (Loss)	13,771,000	7,008,000
Available-for-sale Securities, Gross Unrealized Losses	1,093,000	2,666,000
Gross Unrealized Gains	14,864,000	9,674,000
U.S. Government agencies
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	1
Debt Securities, Amortized Cost	2,317,000	149,000
Available-for-sale Securities, Gross Unrealized Losses	0	0
Gross Unrealized Gains	1,000	0
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities, Number of Positions	181
Debt Securities, Amortized Cost	126,656,000	101,030,000
Available-for-sale Securities, Gross Unrealized Losses	69,000	331,000
Gross Unrealized Gains	11,050,000	7,732,000
U.S. Government agencies collateralized by residential mortgage obligations
Schedule of Available-for-sale Securities
Available-for-sale Securities, Number of Positions	194
Debt Securities, Amortized Cost	207,740,000	204,222,000
Available-for-sale Securities, Gross Unrealized Losses	713,000	1,080,000
Gross Unrealized Gains	3,108,000	1,402,000
Private label residential mortgage backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities, Gross Unrealized Gain (Loss)	50,000
Available-for-sale Securities, Number of Positions	23
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	6
Debt Securities, Amortized Cost	6,728,000	8,408,000
Available-for-sale Securities, Gross Unrealized Losses	311,000	1,255,000
Available-for-sale, Securities in Unrealized Gain Positions, Number of Positions	17
Gross Unrealized Gains	261,000	245,000
Other equity securities
Schedule of Available-for-sale Securities
Available-for-sale Securities, Gross Unrealized Losses	0	0
Gross Unrealized Gains	444,000	295,000
Less than 12 months \| Obligations of states and political subdivisions
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	5
Less than 12 months \| U.S. Government agencies collateralized by residential mortgage obligations
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	38
Greater than 12 months \| Obligations of states and political subdivisions
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	0
Greater than 12 months \| U.S. Government agencies collateralized by residential mortgage obligations
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	20
Below investment grade \| Private label residential mortgage backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities, Gross Unrealized Gain (Loss)	(213,000)
Available-for-sale Securities, Number of Positions	7
Debt Securities, Amortized Cost	$ 5,177,000

Available-for-sale, Securities in Unrealized Gain Positions, Qualitative Disclosure, Number of Positions

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This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired.

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The fair value of available-for-sale securities that serve as collateral for borrowings.

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