Investments (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Gross unrealized gains and losses and fair value of investments classified as available-for-sale
Cost	$ 132,978	$ 109,853
Gross Unrealized Gains	4,358	3,560
Gross Unrealized Losses	(478)	(431)
Fair Value	136,858	112,982
U.S. agency-based mortgage-backed securities [Member]
Gross unrealized gains and losses and fair value of investments classified as available-for-sale
Cost	4,216
Gross Unrealized Gains	19
Gross Unrealized Losses	(14)
Fair Value	4,221
States and political subdivision [Member]
Gross unrealized gains and losses and fair value of investments classified as available-for-sale
Cost	72,914	55,275
Gross Unrealized Gains	3,317	2,488
Gross Unrealized Losses	(28)	(1)
Fair Value	76,203	57,762
Corporate bonds [Member]
Gross unrealized gains and losses and fair value of investments classified as available-for-sale
Cost	47,474	42,802
Gross Unrealized Gains	743	411
Gross Unrealized Losses	(76)	(233)
Fair Value	48,141	42,980
Total fixed maturity [Member]
Gross unrealized gains and losses and fair value of investments classified as available-for-sale
Cost	124,604	98,077
Gross Unrealized Gains	4,079	2,899
Gross Unrealized Losses	(118)	(234)
Fair Value	128,565	100,742
Equity securities [Member]
Gross unrealized gains and losses and fair value of investments classified as available-for-sale
Cost	8,374	11,776
Gross Unrealized Gains	279	661
Gross Unrealized Losses	(360)	(197)
Fair Value	$ 8,293	$ 12,240

This item represents the cost of debt and equity 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 element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

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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