Fair Value of Financial Instruments - Fair Value of Invested Assets (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
U.S. treasury securities	$ 16,210,592	$ 23,538,002
Certificates of deposit	10,091,000	10,090,000
Total fixed maturities	26,301,592	33,628,002
Cash and short term investments	93,507,588	86,416,755
Total financial instruments at fair value	119,809,180	120,044,757
Level 1
U.S. treasury securities	16,210,592	23,538,002
Certificates of deposit	0	0
Total fixed maturities	16,210,592	23,538,002
Cash and short term investments	93,507,588	86,416,755
Total financial instruments at fair value	109,718,180	109,954,757
Level 2
U.S. treasury securities	0	0
Certificates of deposit	10,091,000	10,090,000
Total fixed maturities	10,091,000	10,090,000
Cash and short term investments	0	0
Total financial instruments at fair value	10,091,000	10,090,000
Level 3
U.S. treasury securities	0	0
Certificates of deposit	0	0
Total fixed maturities	0	0
Cash and short term investments	0	0
Total financial instruments at fair value	$ 0	$ 0