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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jan. 31, 2014
Accounting Policies [Abstract] |
Schedule of Net Revenues by Service Category | The revenues associated with project development services include additional amounts earned upon the success of activities performed by project developers including the closing of permanent financing.
Category of Service |  | 2014 |  |  | 2013 |  |  | 2012 |
Core services |  | $ | 191,597,000 |  |  | $ | 261,327,000 |  |  | $ | 132,519,000 |
Project development services |  |  | 27,052,000 |  |  |  | — |  |  |  | — |
Revenues |  | $ | 218,649,000 |  |  | $ | 261,327,000 |  |  | $ | 132,519,000 |

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- Definition No authoritative reference available. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 + Details
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