Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details)

v2.4.1.9
Derivative Instruments (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Dec. 20, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Derivative, notional amount       $ 187,500,000invest_DerivativeNotionalAmount
Derivative, fixed interest rate       0.8525%us-gaap_DerivativeFixedInterestRate
Interest rate, all inclusive 2.3525%hsni_DebtInstrumentInterestRateIncludingDerivativeFixedRate      
Change in fair value of derivative instrument, net of tax (499,000)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax (20,000)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax    
Interest Rate Derivative Liabilities, at Fair Value 596,000us-gaap_InterestRateDerivativeLiabilitiesAtFairValue      
Interest Rate Derivative Assets, at Fair Value   534,000us-gaap_InterestRateDerivativeAssetsAtFairValue 208,000us-gaap_InterestRateDerivativeAssetsAtFairValue  
Estimated unrealized loss to be realized in the next twelve months $ 1,000,000us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred