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Note 1 - Summary of Business and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Property Plant and Equipment, Useful Lives [Table Text Block]

Buildings (years)		39
Construction equipment (years)	5	-	15
Land improvements (years)	5	-	15
Office furniture and fixtures (years)	3	-	10
Leasehold improvements (years or lease period, if shorter)	3	-	10
Transportation equipment (years)		5

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The tabular disclosure of the useful lives of property, plant and equipment owned by the company.

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