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Note 15 - Stockholders' Equity (Details) - Summary of Warrant Shares Outstanding and Exercised (USD $)	12 Months Ended
	Dec. 31, 2011 Warrants Exercised In 2011 [Member]	Dec. 31, 2013 Warrants Exercised in 2012 and 2013 [Member]
Class of Warrant or Right [Line Items]
Warrants Exercised Shares	75,431	0
Warrants Exercised Company's Proceeds from Exercise (in Dollars)	$ 113,147	$ 0
Year-End Warrant Share Balance		0

X

- Definition

Warrants Exercised Shares

+ References

No definition available.

+ Details

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Namespace Prefix:	strl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 2

-Article 4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration