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Fair Value Measurements (Fair Value Of Assets And Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
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Mar. 31, 2015
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Dec. 31, 2014
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Mar. 31, 2014
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| Term Loan [Member] |
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
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| Term loan, carrying value |
$ 500,000us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
$ 228,126us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
$ 237,500us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
| Term loan, fair value |
500,000us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
228,126us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
237,500us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
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| Term Loan [Member] | Level 1 [Member] |
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
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|
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| Term loan, fair value |
0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
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| Term Loan [Member] | Level 2 [Member] |
|
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
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|
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| Term loan, fair value |
500,000us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
228,126us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
237,500us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
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| Term Loan [Member] | Level 3 [Member] |
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|
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
|
|
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| Term loan, fair value |
0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_LongtermDebtTypeAxis
= hsni_TermLoanMember
|
| Revolving Credit Facility [Member] |
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
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| Term loan, carrying value |
175,000us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
|
|
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| Term loan, fair value |
175,000us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
|
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| Revolving Credit Facility [Member] | Level 1 [Member] |
|
|
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
|
|
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| Term loan, fair value |
0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
|
|
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| Revolving Credit Facility [Member] | Level 2 [Member] |
|
|
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
|
|
|
| Term loan, fair value |
175,000us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
|
|
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| Revolving Credit Facility [Member] | Level 3 [Member] |
|
|
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| Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
|
|
|
| Term loan, fair value |
$ 0us-gaap_LoansPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
|
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