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Note 1 - Summary of Business and Significant Accounting Policies (Detail) - Summary of useful lives used in computing depreciation and amortization:	12 Months Ended
	Dec. 31, 2012
Life 39 Years [Member] | Building [Member]
Property, plant, and equipment useful lives	39
Life 5-15 Years [Member] | Construction Equipment [Member] | Minimum [Member]
Property, plant, and equipment useful lives	5
Life 5-15 Years [Member] | Construction Equipment [Member]
Property, plant, and equipment useful lives	15
Life 5-15 Years [Member] | Land Improvements [Member] | Minimum [Member]
Property, plant, and equipment useful lives	5
Life 5-15 Years [Member] | Land Improvements [Member]
Property, plant, and equipment useful lives	15
Life 3-10 Years [Member] | Furniture and Fixtures [Member] | Minimum [Member]
Property, plant, and equipment useful lives	3
Life 3-10 Years [Member] | Furniture and Fixtures [Member]
Property, plant, and equipment useful lives	10
Life 5 Years [Member] | Other Transportation Equipment [Member]
Property, plant, and equipment useful lives	5

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- Definition

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+ Details

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