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Costs and estimated earnings on uncompleted contracts | 12 Months Ended
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Jan. 31, 2013
Costs and estimated earnings on uncompleted contracts [Abstract] |
Costs and estimated earnings on uncompleted contracts | Note 4 - Costs and estimated earnings on uncompleted contracts
| 2012 |  | 2011 |
Costs incurred on uncompleted contracts | $71,382 | $61,938
Estimated earnings | 16,215 |  | 11,550 |
Earned revenue | 87,597 |  | 73,488 |
Less billings to date | 87,234 |  | 73,091 |
Costs in excess of billings, net | $363 | $397
Balance sheet classification |  |
Costs and estimated earnings in excess of billings on uncompleted contracts | $1,935 | $2,375
Billings in excess of costs and estimated earnings on uncompleted contracts | (1,572 | ) | (1,978 | )
Costs in excess of billings, net | $363 | $397

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