Name:	sp_CapitalizedContractCostAmortizationExpenseDueInTheNextTwelveMonths
Namespace Prefix:	sp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for other deferred costs.

No definition available.

Name:	sp_CapitalizedContractCostAmortizationExpenseYearFive
Namespace Prefix:	sp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for other deferred costs.

No definition available.

Name:	sp_CapitalizedContractCostAmortizationExpenseYearFour
Namespace Prefix:	sp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the amount of amortization expense expected to be recognized after the fifth fiscal year following the latest fiscal year for other deferred costs.

No definition available.

Name:	sp_CapitalizedContractCostAmortizationExpenseYearSixAndAfter
Namespace Prefix:	sp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for other deferred costs.

No definition available.

Name:	sp_CapitalizedContractCostAmortizationExpenseYearThree
Namespace Prefix:	sp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for other deferred costs.

No definition available.

Name:	sp_CapitalizedContractCostAmortizationExpenseYearTwo
Namespace Prefix:	sp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

Name:	us-gaap_CapitalizedContractCostNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.