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Loan Transactions and Related Notes Receivable - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 31, 2009 First Credit Agreement | Jan. 31, 2009 Second Credit Agreement | Jul. 31, 2014 Third Credit Agreement | Dec. 31, 2009 Third Credit Agreement
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loan amount | $ 10,000 | $ 10,000 | $ 7,400 | $ 10,000
Notes receivable, maturity |  |  | Aug. 30, 2015 |

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- Definition Notes Receivable, Maturity Date + References No definition available. + Details
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Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Details
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Balance Type: | na
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- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Subparagraph 3 -Article 9 + Details
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