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Investments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Summary of amortized cost, gross unrealized gains and losses, and estimated fair value available-for-sale securities
Amortized Cost	$ 38,363	$ 34,147
Gross Unrealized Gain	1,883	929
Available-for-sale Securities, Gross Unrealized Loss	105	434
Fair Value	40,141	34,642
U.S. Treasury and U.S. government agencies [Member]
Summary of amortized cost, gross unrealized gains and losses, and estimated fair value available-for-sale securities
Amortized Cost	516	509
Gross Unrealized Gain	56	47
Available-for-sale Securities, Gross Unrealized Loss
Fair Value	572	556
Commercial mortgage-backed securities [Member]
Summary of amortized cost, gross unrealized gains and losses, and estimated fair value available-for-sale securities
Amortized Cost	10,797	10,574
Gross Unrealized Gain	627	314
Available-for-sale Securities, Gross Unrealized Loss	1	14
Fair Value	11,423	10,874
Corporate bonds [Member]
Summary of amortized cost, gross unrealized gains and losses, and estimated fair value available-for-sale securities
Amortized Cost	12,274	10,199
Gross Unrealized Gain	316	58
Available-for-sale Securities, Gross Unrealized Loss	104	417
Fair Value	12,486	9,840
State, municipalities, and political subdivisions [Member]
Summary of amortized cost, gross unrealized gains and losses, and estimated fair value available-for-sale securities
Amortized Cost	10,279	9,982
Gross Unrealized Gain	698	393
Available-for-sale Securities, Gross Unrealized Loss		3
Fair Value	10,977	10,372
Other [Member]
Summary of amortized cost, gross unrealized gains and losses, and estimated fair value available-for-sale securities
Amortized Cost	4,497	2,883
Gross Unrealized Gain	186	117
Available-for-sale Securities, Gross Unrealized Loss
Fair Value	4,683	3,000
Equity securities [Member]
Summary of amortized cost, gross unrealized gains and losses, and estimated fair value available-for-sale securities
Amortized Cost	8,690	5,364
Gross Unrealized Gain	274	133
Available-for-sale Securities, Gross Unrealized Loss	295	290
Fair Value	$ 8,669	$ 5,207

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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