Investments (Details Textual) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012 Securities	Dec. 31, 2011 Securities
Investments (Textual) [Abstract]
Percentage of which the company held security of any issuer	10.00%	10.00%
Number of fixed maturity securities classified as available for sale	14	19
Fair value of fixed maturity securities classified as available for sale	$ 23,200,000	$ 19,700,000
Unrealized loss of fixed maturity securities classified as available for sale	340,143	610,646
Percentage decrease in value of individual equity security to assume other than temporary decline in value	20.00%
Time period for which individual security should be in unrealized position of twenty percentage or more to assume it as other than temporary decline	More than six months
Number of securities in unrealized loss position	2
Percentage of ownership interest	48.20%
General obligation bonds [Member] | Obligations of states and political subdivisions [Member]
Schedule of Investments [Line Items]
Aggregate fair value of bond held	360,400,000	372,200,000
Amortized cost of bond held	331,900,000	348,400,000
Special revenue bond [Member]
Schedule of Investments [Line Items]
Aggregate fair value of bond held	96,600,000	86,500,000
Amortized cost of bond held	$ 88,900,000	$ 81,000,000
Education bonds [Member]
Schedule of Investments [Line Items]
Percentage of investments in special revenue bonds	50.00%	59.00%
Water and sewer utility bonds [Member]
Schedule of Investments [Line Items]
Percentage of investments in special revenue bonds	19.00%	17.00%