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Costs, Estimated Earnings and Billings on Uncompleted Contracts (Tables) | 12 Months Ended
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Jan. 31, 2014
Contractors [Abstract] |
Aggregate Amounts of Costs Incurred and Earnings Accrued on Uncompleted Contracts Compared with Billings for Contracts | The tables below set forth the aggregate amount of costs incurred and earnings accrued on uncompleted contracts compared with the billings on those contracts through January 31, 2014 and 2013, and reconcile the net amounts of billings in excess of costs and estimated earnings to the amounts included in the consolidated balance sheets at those dates.
|  | 2014 |  |  | 2013 |
Costs incurred on uncompleted contracts |  | $ | 162,137,000 |  |  | $ | 259,390,000 |
Estimated accrued earnings |  |  | 21,961,000 |  |  |  | 48,724,000 |
|  |  | 184,098,000 |  |  |  | 308,114,000 |
Less – Billings to date |  |  | 318,307,000 |  |  |  | 380,295,000 |
|  | $ | 134,209,000 |  |  | $ | 72,181,000 |
Costs and estimated earnings in excess of billings |  | $ | 527,000 |  |  | $ | 1,178,000 |
Billings in excess of costs and estimated earnings |  |  | 134,736,000 |  |  |  | 73,359,000 |
|  | $ | 134,209,000 |  |  | $ | 72,181,000 |

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