Name:	hsc_FairValueExceedingCarryingValueApproximatePercentage
Namespace Prefix:	hsc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the discount rate assumed in the goodwill impairment analysis to determine the fair value of reporting units.

No definition available.

Name:	hsc_GoodwillImpairmentAnalysisFairValueAssumptionsDiscountRate
Namespace Prefix:	hsc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the amount by which carrying value would exceed fair value of the reporting unit if the higher percentage decrease in the fair value of reporting units is assumed in a sensitivity analysis related to the goodwill impairment analysis.

No definition available.

Name:	hsc_GoodwillImpairmentAnalysisSensitivityAnalysisBookValueExcessAtHigherPercentageDecreaseInFairValue
Namespace Prefix:	hsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the higher percentage decrease in the fair value of reporting units assumed in a sensitivity analysis related to the goodwill impairment analysis.

No definition available.

Name:	hsc_GoodwillImpairmentAnalysisSensitivityAnalysisHigherPercentageDecreaseInFairValue
Namespace Prefix:	hsc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the increase in the weighted average cost of capital of reporting units assumed in a sensitivity analysis related to the goodwill impairment analysis.

No definition available.

Name:	hsc_GoodwillImpairmentAnalysisSensitivityAnalysisIncreaseInWeightedAverageCostOfCapital
Namespace Prefix:	hsc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the lower percentage decrease in the fair value of reporting units assumed in a sensitivity analysis related to the goodwill impairment analysis.

No definition available.

Name:	hsc_GoodwillImpairmentAnalysisSensitivityAnalysisLowerPercentageDecreaseInFairValue
Namespace Prefix:	hsc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the number of reporting units of the entity.

No definition available.

Name:	hsc_NumberOfReportingUnits
Namespace Prefix:	hsc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the number of reporting units of the entity associated with goodwill.

No definition available.

Name:	hsc_NumberOfReportingUnitsAssociatedWithGoodwill
Namespace Prefix:	hsc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the number of reporting units in which the majority of goodwill resides.

No definition available.

Name:	hsc_NumberOfReportingUnitsAssociatedWithMajorityOfGoodwill
Namespace Prefix:	hsc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of total goodwill allocated to the reporting units in which the majority of goodwill resides.

No definition available.

Name:	hsc_PercentageOfGoodwillAllocatedToReportingUnitsWithMajorityOfGoodwill
Namespace Prefix:	hsc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the maximum number of levels below operating segments at which reporting units may reside.

No definition available.

Name:	hsc_ReportingUnitNumberOfLevelsBelowOperatingSegmentMaximum
Namespace Prefix:	hsc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-Clause 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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 43

-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 Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph l

-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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 34

-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 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 72

-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.