XML 14 R53.htm IDEA: XBRL DOCUMENT v2.4.0.8

Note 13 - Covenants Compliance (Details)	9 Months Ended
	Sep. 30, 2013
Covenants And Events Of Default [Abstract]
Debt Instrument, Basis Points	100

X

- Details

Name:	strl_CovenantsAndEventsOfDefaultTextBlockAbstract
Namespace Prefix:	strl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Debt Instrument, Basis Points

+ References

No definition available.

+ Details

Name:	strl_DebtInstrumentBasisPoints
Namespace Prefix:	strl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration