Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Narrative) (Details)

v2.4.1.9
Fair Value Measurements (Narrative) (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Fair Value Disclosures [Abstract]          
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value $ 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue $ 1,032,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue $ 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue $ 1,032,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue  
Fair value adjustment to contingent consideration obligation     1,000,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings 3,600,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings  
Asset impairment 3,000,000us-gaap_AssetImpairmentCharges   0us-gaap_AssetImpairmentCharges 3,040,000us-gaap_AssetImpairmentCharges [1] 0us-gaap_AssetImpairmentCharges
Total fair value adjustments, before tax   $ 600,000hsni_Totalfairvalueadjustmentsbeforetax   $ 600,000hsni_Totalfairvalueadjustmentsbeforetax  
[1] (a) Results for the year ended December 31, 2013 include fair value adjustments of $3.6 million related to a contingent consideration liability and $3.0 million for the impairment of indefinite-lived intangible assets, both related to the 2012 acquisition of Chasing Fireflies, one of the Cornerstone brands