Investments - Additional Information (Detail) (USD $)	3 Months Ended				12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2014 Funds	Mar. 31, 2013	Mar. 31, 2013 Non-Agency Backed - Residential [Member]	Mar. 31, 2014 Collateralized Mortgage Obligations [Member] Non-Agency Backed - Residential [Member]	Dec. 31, 2013 Collateralized Mortgage Obligations [Member] Non-Agency Backed - Residential [Member]	Mar. 31, 2014 Collateralized Mortgage Obligations [Member] Non-Agency Backed - Commercial [Member]	Dec. 31, 2013 Collateralized Mortgage Obligations [Member] Non-Agency Backed - Commercial [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of investment funds	3
Unfunded commitments	$ 2,100,000
Fixed maturities and cash equivalents on deposit with various insurance departments at fair value and amortized cost	5,200,000
Cash equivalents on deposit with another insurance company at fair value and amortized cost	9,400,000
Non credit other than temporary impairment for securities				900,000	900,000	200,000	200,000
Net OTTI charges recognized in net income		$ 28,000	$ 28,000