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Property, Plant and Equipment - Additional Information (Detail) (USD $) | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jun. 30, 2012 | Oct. 31, 2013 | Oct. 31, 2012 | Oct. 31, 2013 | Oct. 31, 2012
Property Plant And Equipment Useful Life And Values [Abstract] |  |  |  |  |
Cash purchase of office building | $ 1,955,000 |  |  |  |
Depreciation expense |  | 142,000 | 136,000 | 407,000 | 385,000
Cost of maintenance & repair |  | 83,000 | 92,000 | 204,000 | 263,000
Rent expense included in the selling, general and administrative expenses of continuing operations |  | 56,000 | 101,000 | 125,000 | 319,000
Rent expense incurred at project sites and included in cost of revenues |  | $ 866,000 | $ 1,465,000 | $ 2,665,000 | $ 5,719,000

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- Definition Rent expense incurred at project sites and included in cost of revenues. + References No definition available. + Details
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- Definition The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition The cash outflow for acquisition of buildings (properties) whether for investment or use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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