XML 40 R62.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Income Taxes (Details 2) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Income Tax Disclosure [Abstract] |  |  |  |
Interest and penalties recognized | $ 1,800,000 | $ 1,000,000 | $ 300,000 |
Interest and penalties accrued | 8,000,000 | 9,700,000 |  |
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |  |
Balance at the beginning of the period | 33,408,000 | 35,889,000 | 36,791,000 |
Additions for tax positions related to the current year (includes currency translation adjustment) | 584,000 | 2,534,000 | 1,846,000 |
Additions for tax positions related to prior years (includes currency translation adjustment) | 37,000 | 4,014,000 | 313,000 |
Other reductions for tax positions related to prior years | (3,987,000) | (147,000) | (429,000) |
Statutes of limitations expirations | (5,124,000) | (8,521,000) | (2,348,000) |
Settlements | 0 | (361,000) | (284,000) |
Balance at the end of the period | 24,918,000 | 33,408,000 | 35,889,000 |
Reconciliation of Deferred Income Tax Benefits [Roll Forward] |  |  |  |
Balance at beginning of period | (517,000) | (738,000) | (949,000) |
Additions for tax positions related to the current year (includes currency translation adjustment) | (8,000) | (10,000) | 0 |
Additions for tax positions related to prior years (includes currency translation adjustment) | 2,000 | (11,000) | (44,000) |
Other reductions for tax positions related to prior years | 0 | 0 | 0 |
Statutes of limitation expirations | 154,000 | 224,000 | 156,000 |
Settlements | 0 | 18,000 | 99,000 |
Balance at the end of the period | (369,000) | (517,000) | (738,000) |
Reconciliation of Net Unrecognized Tax Benefits [Roll Forward] |  |  |  |
Balance at the beginning of the period | 24,549,000 | 32,891,000 | 35,151,000 | 35,842,000
Additions for tax positions related to the current year (includes currency translation adjustment) | 576,000 | 2,524,000 | 1,846,000 |
Additions for tax positions related to prior years (includes currency translation adjustment) | 39,000 | 4,003,000 | 269,000 |
Other reductions for tax positions related to prior years | (3,987,000) | (147,000) | (429,000) |
Statutes of limitation expirations | (4,970,000) | (8,297,000) | (2,192,000) |
Settlements | 0 | (343,000) | (185,000) |
Balance at the end of the period | 24,549,000 | 32,891,000 | 35,151,000 | 35,842,000
Income Tax Contingency [Line Items] |  |  |  |
Portion of UTB, expected to be recognized upon ssettlement of tax examinations and the expiration of various statutes of limitations within next twelve months | 3,800,000 |  |  |
Foreign jurisdiction |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Unrecognized tax benefits related to current and prior years that created additional operating losses in a foreign jurisdiction | 200,000 |  |  |
Decrease related to previously unrecognized tax benefits that were recognized in 2012 due to change in enacted legislation | $ (4,000,000) |  |  |

X
- Definition The gross amount of deferred tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References No definition available. + Details
Name: | hsc_DeferredTaxBenefits
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The gross amount of decreases in deferred tax benefits resulting from tax positions taken in prior period tax returns. + References No definition available. + Details
Name: | hsc_DeferredTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The gross amount of decreases in deferred tax benefits resulting from settlements with taxing authorities. + References No definition available. + Details
Name: | hsc_DeferredTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The gross amount of increases in deferred tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period. + References No definition available. + Details
Name: | hsc_DeferredTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The gross amount of increases in deferred tax benefits resulting from tax positions taken in prior period tax returns. + References No definition available. + Details
Name: | hsc_DeferredTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The gross amount of decreases in deferred tax benefits resulting from lapses of the applicable statutes of limitation. + References No definition available. + Details
Name: | hsc_DeferredTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | hsc_ReconciliationOfDeferredIncomeTaxBenefitsRollForward
Namespace Prefix: | hsc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | hsc_ReconciliationOfNetUnrecognizedTaxBenefitsRollForward
Namespace Prefix: | hsc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the gross amount of increases or decreases in unrecognized tax benefits resulting from tax positions taken in current and prior period tax returns related to net operating loss carryforwards in a foreign jurisdiction, excluding amounts pertaining to examined tax returns. + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentAndPriorPeriodTaxPositionsRelatedToAdditionalNetOperatingLossCarryforwardsInForeignJurisdiction
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositionsNet
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthoritiesNet
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unrecognized Tax Benefits, Increase (Decrease) Resulting from Changes in Enacted Legislation + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromChangesInEnactedLegislation
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period. + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsNet
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositionsNet
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsNet
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The net amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitation. + References No definition available. + Details
Name: | hsc_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitationsNet
Namespace Prefix: | hsc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(4) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration