Represents the carrying value as of the balance sheet date of payments made in excess of existing available balances.

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Represent the current estimates for the additional structural and repair costs.

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- Definition

Represent the percentage of indemnification of significant portion of cost pursuant to merger agreement.

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Represents the forecasted period for income statement and working capital projections for goodwill impairment assessment.

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Represents the period after which terminal values considered for goodwill impairment assessment.

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For an unclassified balance sheet, the accumulated amortization, as of the reporting date, representing the periodic charge to earnings of deferred costs which are associated with debt obligations existing as of the end of the period.

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

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-Name Accounting Standards Codification

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-Paragraph 17

-Article 5

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Amount of noncash expense included in interest expense to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments. Alternate captions include noncash interest expense.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

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Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

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No definition available.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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- Definition

The cash outflow for financing costs associated with business combinations.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Significant Accounting Policies and Practices (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 segment	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Other Intangibles
Number of Operating Segments	4us-gaap_NumberOfOperatingSegments
Forecasted period for income statement and working capital projections to assess goodwill impairment	5 years
Period after which terminal values considered to assess goodwill impairment	5 years
Debt Issuance Costs
Debt issuance costs	$ 2,635us-gaap_DebtIssuanceCosts	$ 3,890us-gaap_DebtIssuanceCosts
Accumulated amortization of debt issuance costs	7,333	6,078
Amortization expense	1,315	1,484	1,211
Financial Instruments
Book overdrafts	30,782stan_BookOverdrafts	29,310stan_BookOverdrafts
Central
Financial Instruments
Total cost	1,303
Indemnification of cost pursuant to merger agreement	80.00%
Minimum \| Central
Financial Instruments
Structural and repair costs	7,000
Maximum \| Central
Financial Instruments
Structural and repair costs	$ 22,000
Equipment \| Minimum
Financial Instruments
Ranges of Estimated useful life	2 years
Equipment \| Maximum
Financial Instruments
Ranges of Estimated useful life	10 years
Leasehold improvements \| Maximum
Financial Instruments
Ranges of Estimated useful life	10 years
Leasehold improvements \| Average
Financial Instruments
Ranges of Estimated useful life	8 years 3 months 18 days