• Filing Date: 2015-03-10
  • Form Type: 10-K
  • Description: Annual report
v2.4.1.9
Stock-Based Compensation - Assumptions Used to Determine the Fair Value of the Awards with Market-Based (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions and Methodology [Line Items]      
Expected dividends per share $ 1.10hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPerShare $ 0.90hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPerShare $ 0.80hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPerShare
Expected volatility, minimum 42.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum 41.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum 36.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum
Expected volatility, maximum 46.60%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum 51.60%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum 50.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum
Risk-free interest rate, minimum 0.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum 0.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
Risk-free interest rate, maximum 1.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum 1.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum 1.20%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum
Estimated cost of capital 11.50%hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedCostOfCapital    
Estimated cost of capital, minimum   9.30%hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedCostOfCapitalMinimum 11.90%hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedCostOfCapitalMinimum
Estimated cost of capital, maximum   10.30%hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedCostOfCapitalMaximum 12.10%hci_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedCostOfCapitalMaximum
Expected life (in years) 4 years   6 years
Minimum [Member]      
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions and Methodology [Line Items]      
Expected life (in years)   4 years  
Maximum [Member]      
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions and Methodology [Line Items]      
Expected life (in years)   6 years