Note 1 - Summary of Business and Significant Accounting Policies (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Owenership Interest In Subsidiary	50.00%
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Percentage	50.00%
Estimated Construction Revenues, Before Tax	$ 4,900,000	$ 11,800,000
Estimated Construction Revenue, Net Of Tax	5,300,000	7,600,000
Estimated Construction Revenue Per Diluted Share (in Dollars per share)	$ 0.32	$ 0.46
Costs in Excess of Billings on Uncompleted Contracts or Programs	0	2,500,000
Mortgage Loans on Real Estate, Number of Loans	1
Mortgage Loans on Real Estate	262,000	336,000
Mortgage Loans on Real Estate, Interest Rate	3.50%
Contract Receivable Retainage	18,100,000	22,600,000
Contract Receivable	4,600,000	0
Depreciation	19,000,000	16,900,000	15,500,000
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums		321,000
Amortization of Financing Costs	32,000	326,000	304,000
Number of Operating Segments	1
Number of Reportable Segments	1
Number of Reporting Units	1
Income Tax Examination, Likelihood of Unfavorable Settlement	50 percent
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		1 year
Interest Costs Capitalized		2,000	6,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)	0	53,900	95,107
Options And Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)	109,424	88,426
Myers & Sons Construction L.P. [Member]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Percentage	50.00%
Greater Than [Member]
Ownership Interest In Joint Venture	50.00%
Minimum [Member]
Revenue Recognition Percentage of Completion Range	12 months
Warranty Period	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Maximum [Member]
Revenue Recognition Percentage of Completion Range	36 months
Warranty Period	2 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Amended Facility [Member]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ 289,000