XML 93 R64.htm IDEA: XBRL DOCUMENT v2.4.1.9

Note 9 - Derivative Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 gal	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Derivative Financial Instruments (Details) [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ (0.1)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	$ 0.1us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
Price Risk Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ (0.1)us-gaap_PriceRiskCashFlowHedgeGainOrLossReclassifiedToEarningsNet	$ 0.1us-gaap_PriceRiskCashFlowHedgeGainOrLossReclassifiedToEarningsNet	$ (0.1)us-gaap_PriceRiskCashFlowHedgeGainOrLossReclassifiedToEarningsNet
Derivative, Nonmonetary Notional Amount, Gallons (in US Gallons)	100,000strl_DerivativeNonmonetaryNotionalAmountGallons
Minimum [Member]
Note 9 - Derivative Financial Instruments (Details) [Line Items]
Derivative, Nonmonetary, Number of Gallons Range (in US Gallons)	10,000strl_DerivativeNonmonetaryNumberOfGallonsRange / us-gaap_RangeAxis = us-gaap_MinimumMember
Underlying, Derivative Volume (in Dollars per US Gallon)	2.75us-gaap_UnderlyingDerivativeVolume / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum [Member]
Note 9 - Derivative Financial Instruments (Details) [Line Items]
Derivative, Nonmonetary, Number of Gallons Range (in US Gallons)	15,000strl_DerivativeNonmonetaryNumberOfGallonsRange / us-gaap_RangeAxis = us-gaap_MaximumMember
Underlying, Derivative Volume (in Dollars per US Gallon)	2.79us-gaap_UnderlyingDerivativeVolume / us-gaap_RangeAxis = us-gaap_MaximumMember

X

- Definition

The number of gallons in a derivative contract expressed in nonmonetary units. For example, the number of gallons specified in a fuel forward purchase contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	strl_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The range in gallons of the derivative contract nonmonetary units. For example, volume in gallons specified in a fuel forward purchase contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	strl_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	duration

X

- Details

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X

- Definition

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of net gains or losses on price risk cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income.

+ References

No definition available.

+ Details

Name:	us-gaap_PriceRiskCashFlowHedgeGainOrLossReclassifiedToEarningsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract measured in volume but not the derivative contract itself.

+ References

No definition available.

+ Details

Name:	us-gaap_UnderlyingDerivativeVolume
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

X

- Details

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X

- Details

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Period Type: