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Fair Value - Presentation of Fair-Value Measurements for Each Major Category of Assets Measured on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Jun. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale $ 130,248 $ 139,046    
Limited partnership interests 7,513      
Fair Value Measurements Using [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 130,248 139,046    
Limited partnership interests 7,513      
Cash and cash equivalents 72,033 59,104    
Total 209,794 198,150    
Fair Value Measurements Using [Member] | Debt Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 119,511 130,713    
Fair Value Measurements Using [Member] | Debt Securities [Member] | U.S. Government and Agencies [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 12,485 12,110    
Fair Value Measurements Using [Member] | Debt Securities [Member] | State [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 736 4,111    
Fair Value Measurements Using [Member] | Debt Securities [Member] | Political Subdivisions [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 612 790    
Fair Value Measurements Using [Member] | Debt Securities [Member] | Revenue and Assessment [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 14,658 17,996    
Fair Value Measurements Using [Member] | Debt Securities [Member] | Corporate Bonds [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 73,325 71,537    
Fair Value Measurements Using [Member] | Debt Securities [Member] | Agency Backed [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 7,514 11,870    
Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Residential [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 4,660 5,472    
Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Commercial [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 3,943 5,109    
Fair Value Measurements Using [Member] | Debt Securities [Member] | Redeemable Preferred Stock [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 1,578 1,718    
Fair Value Measurements Using [Member] | Equity Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mutual fund, available-for-sale 10,737 8,333    
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 24,800 22,161    
Limited partnership interests         
Cash and cash equivalents 72,033 59,104    
Total 96,833 81,265    
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 14,063 13,828    
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | U.S. Government and Agencies [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 12,485 12,110    
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | State [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Political Subdivisions [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Revenue and Assessment [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Corporate Bonds [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Agency Backed [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Residential [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Commercial [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Redeemable Preferred Stock [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 1,578 1,718    
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements Using [Member] | Equity Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mutual fund, available-for-sale 10,737 8,333    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 105,448 116,885    
Limited partnership interests         
Cash and cash equivalents          
Total 105,448 116,885    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 105,448 116,885    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | U.S. Government and Agencies [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | State [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 736 4,111    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Political Subdivisions [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 612 790    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Revenue and Assessment [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 14,658 17,996    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Corporate Bonds [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 73,325 71,537    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Agency Backed [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 7,514 11,870    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Residential [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 4,660 5,472    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Commercial [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 3,943 5,109    
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Redeemable Preferred Stock [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements Using [Member] | Equity Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mutual fund, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale 0 0 0 0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Limited partnership interests 7,513      
Cash and cash equivalents          
Total 7,513       
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | U.S. Government and Agencies [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | State [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Political Subdivisions [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Revenue and Assessment [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Corporate Bonds [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Agency Backed [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Residential [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Non-Agency Backed - Commercial [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Debt Securities [Member] | Redeemable Preferred Stock [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total fixed maturities, available-for-sale          
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements Using [Member] | Equity Securities [Member]
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Mutual fund, available-for-sale