Borrowings - Additional Information (Detail) (USD $)	6 Months Ended				6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014 Atlantic States [Member]	Jun. 30, 2014 Atlantic States [Member] Lines of Credit [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Subordinated Debentures [Member]	Jun. 30, 2014 Manufacturers and Traders Trust Company [Member]	Jun. 30, 2014 West Bend Mutual Insurance Company [Member] Subordinated Debentures [Member]	Jun. 30, 2014 MICO [Member] Indianapolis [Member]	Dec. 31, 2013 MICO [Member] Indianapolis [Member]	Jun. 30, 2014 MICO [Member] Indianapolis [Member] Lines of Credit [Member]
Line of Credit Facility [Line Items]
Right to request for extension of credit agreement with Manufacturers and Traders Trust Company						$ 60,000,000				$ 2,301,231
Line of credit that expires date	2017-07
Outstanding borrowings	45,000,000
Line of credit facility remaining borrowing capacity	15,000,000
Line of credit, interest rate related to LIBOR rate description	Interest rates equal to M&T's current prime rate or the then current LIBOR rate plus 2.25%.
Debt instrument interest rate effective percentage				2.25%
Interest rate on borrowings	2.41%
Percentage commitment fee	0.20%
Revolving credit facility, borrowing interest rate	The credit agreement requires our compliance with certain covenants. These covenants include minimum levels of our net worth, leverage ratio, statutory surplus and the A.M. Best ratings of our insurance subsidiaries. We were in compliance with all requirements of the credit agreement during the six months ended June 30, 2014.
Federal Home Loan Bank borrowing amount outstanding								0	0
Interest rate on advances			0.31%
Debt issued to FHLB in exchange of advance cash		15,000,000
Debt instrument basis spread on variable rate					5.00%
Purchase of surplus note							$ 5,000,000