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Stockholder's Equity - Additional Information (Detail) - USD ($) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Nov. 30, 2013 | May. 31, 2012 | Aug. 31, 2015 | Feb. 28, 2015 | Aug. 31, 2014 | Aug. 31, 2015 | Aug. 31, 2014 | Nov. 30, 2014 | Nov. 26, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share distribution period |  |  |  |  |  | 20 days |  |  |
Granted, Shares |  |  |  |  | 0 |  | 0 |  |
Weighted average grant date fair value of options |  |  |  |  |  | $ 1.90 |  |  |
Shares granted during period |  |  |  |  |  | 22,500 |  |  |
Compensation cost related to market-based restricted shares of common stock expensed |  |  | $ 60,000 |  | $ 48,000 | $ 305,000 | $ 255,000 |  |
Common stock, par value |  |  | $ 0.01 |  |  | $ 0.01 |  | $ 0.01 |
Common shares exchange ratio |  |  |  |  |  | One Common Share per Right |  |  |
Preferred Stock, redemption price Per Share |  |  | $ 0.01 |  |  | $ 0.01 |  |  |
Market price for common stock, percentage |  |  |  |  |  | 50.00% |  |  |
Assets sale percentage |  |  |  |  |  | 50.00% |  |  |
Rights expiration date |  |  |  |  |  | Dec. 05, 2017 |  |  |
2000 Plan [Member] | Employee Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock |  |  | 2,250,000 |  |  | 2,250,000 |  |  |
Share distribution period |  |  |  |  |  | 3 years |  |  |
Options exercisable period after termination |  |  |  |  |  | 90 days |  |  |
Shares outstanding under stock incentive plan |  |  | 0 |  |  | 0 |  | 2,500 |
Shares issued under stock incentive plan |  |  | 0 |  |  | 0 |  |  |
2000 Plan [Member] | Minimum [Member] | Employee Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Term of options |  |  |  |  |  | 5 years |  |  |
2000 Plan [Member] | Maximum [Member] | Employee Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Term of options |  |  |  |  |  | 7 years |  |  |
2006 Plan [Member] | Employee Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock |  |  | 1,000,000 |  |  | 1,000,000 |  |  |
Shares outstanding under stock incentive plan |  |  | 576,430 |  |  | 576,430 |  | 594,766 |
Shares issued under stock incentive plan |  |  | 253,679 |  |  | 253,679 |  |  |
2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock |  |  | 1,500,000 |  |  | 1,500,000 |  |  |
Shares issued under stock incentive plan |  |  | 1,795,911 |  |  | 1,795,911 |  |  |
2012 Plan [Member] | Employee Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Increase in common stock reserved for issuance |  | 2,500,000 |  |  |  |  |  |  |
Preferred Stock Rights Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock, par value |  |  |  |  |  |  |  |  | $ 0.01
Terms for right to purchasing preferred stock |  |  |  |  |  | Each Right represents the right to purchase from the Company one one-thousandth (1/1,000) of a share of Series A Junior Participating Preferred Stock (the "Preferred Shares"), subject to adjustment as provided in the Rights Agreement. This fraction of a Preferred Share is substantially similar to a Common Share, in that the Rights Agreement provides for each Preferred Share to have the voting, liquidation and dividend rights that are equivalent to 1,000 times the rights of a Common Share. |  |  |
Service Based Stock Options [Member] | 2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  | 400,000 |  | 400,000 |
Service Based Restricted Shares [Member] | 2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  | 129,729 |  | 129,729 |
Performance Based Options [Member] | 2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  | 116,240 |  | 58,120 |
Market Based Options [Member] | 2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  | 58,120 |  | 58,120 |
Service-Based Vesting Condition Options [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Shares outstanding under stock incentive plan |  |  | 976,430 |  |  | 976,430 |  | 997,266 |
Granted, Shares |  |  |  |  |  | 22,500 |  |  |
Service-Based Vesting Condition Options [Member] | 2000 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  | $ 37,000 |  |  | $ 37,000 |  |  |
Service-Based Vesting Condition Options [Member] | 2006 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  | 37,000 |  |  | 37,000 |  |  |
Service-Based Vesting Condition Options [Member] | 2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  | 37,000 |  |  | 37,000 |  |  |
Restricted Common Shares [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  | $ 20,000 |  |  | $ 20,000 |  |  |
Description of minimum requirement to be satisfied by employee for restricted common share |  |  |  |  |  | The Employment Agreements state if David Portnoy and Mark Portnoy are employed by the Company on November 30, 2014, then no later than February 15, 2015, the Company will grant up to 186,487 and 162,163 shares of restricted common shares, respectively, based on certain performance thresholds, as defined in the agreements. |  |  |
Description of minimum requirement to be satisfied by employee for additional restricted common share |  |  |  |  |  | In addition, if David Portnoy and Mark Portnoy are employed by the Company on November 30, 2015, then no later than February 15, 2016, the Company will grant up to an additional 186,487 and 162,163 shares of restricted common shares, respectively, based on similar performance thresholds, as defined in the agreements. |  |  |
Restricted Common Shares [Member] | David Portnoy [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of share issued to option holder |  |  |  | 93,244 |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock |  |  | 186,487 |  |  | 186,487 |  |  |
Additional restricted common shares to be granted |  |  |  |  |  | 186,487 |  |  |
Restricted Common Shares [Member] | Mark Portnoy [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of share issued to option holder |  |  |  | 81,082 |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock |  |  | 162,163 |  |  | 162,163 |  |  |
Additional restricted common shares to be granted |  |  |  |  |  | 162,163 |  |  |
Restricted Common Shares [Member] | 2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share based compensation, percentage of vesting upon grant |  |  |  |  |  | 33.33% |  |  |
Restricted Common Shares [Member] | 2012 Plan [Member] | December One Two Thousand Fourteen [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share based compensation, percentage of vesting upon grant |  |  |  |  |  | 33.33% |  |  |
Restricted Common Shares [Member] | 2012 Plan [Member] | December One Two Thousand Fifteen [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share based compensation, percentage of vesting upon grant |  |  |  |  |  | 33.33% |  |  |
Restricted Common Shares [Member] | 2012 Plan [Member] | David Portnoy [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Shares granted during period | 70,270 |  |  |  |  |  |  |  |
Restricted Common Shares [Member] | 2012 Plan [Member] | Mark Portnoy [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Shares granted during period | 59,459 |  |  |  |  |  |  |  |
Restricted Common Shares [Member] | Selling, General and Administrative Expenses [Member] | 2012 Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Compensation cost related to market-based restricted shares of common stock expensed |  |  |  |  |  | $ 220,000 |  |  |
Market Shares [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  | $ 24,000 |  |  | 24,000 |  |  |
Market Shares [Member] | David Portnoy [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Compensation cost related to market-based restricted shares of common stock expensed |  |  |  |  |  | $ 68,000 |  |  |
Stock Option [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of share issued to option holder |  |  | 27,500 |  | 13,750 | 27,500 | 46,246 |  |
Options exercised |  |  | $ 54,100 |  | $ 22,238 | $ 54,100 | $ 70,902 |  |
Stock Option [Member] | Service-Based Vesting Condition Options [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of options |  |  |  |  |  | $ 1.90 |  |  |
Weighted-average period |  |  |  |  |  | 10 months 10 days |  |  |
Total fair value of shares vested |  |  |  |  |  | $ 45,000 |  |  |
Stockholder Rights Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Acquisition of common stock outstanding percentage |  |  | 20.00% |  |  | 20.00% |  |  |
Addition of common stock outstanding percentage |  |  |  |  |  | 0.25% |  |  |
Increase in common stock outstanding percentage |  |  |  |  |  | 22.50% |  |  |

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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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