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Note 6 - Contracts in Progress (Detail) - Summary of Costs and Estimated Earnings on Contracts in Progress (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Dec. 31, 2011
Costs incurred on uncompleted contracts | $ 3,922 | $ 3,193
Estimated earnings | 1,064 | 855
Total revenues | 4,986 | 4,048
Less: billings to date | 5,162 | 4,031
Total | (176) | 17
Balance sheet classification: |  |
Costs in excess of billings on uncompleted contracts | 45 | 171
Billings in excess of costs on uncompleted contracts | (221) | (154)
Total | $ (176) | $ 17

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