Share Repurchase Plan - Additional Information (Detail) - $ / shares |
1 Months Ended | 3 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2018 |
Jun. 30, 2015 |
Feb. 28, 2018 |
Feb. 28, 2017 |
Nov. 30, 2017 |
Oct. 06, 2016 |
Apr. 08, 2015 |
Jun. 06, 2012 |
Dec. 31, 2011 |
|
| Equity, Class of Treasury Stock [Line Items] | |||||||||
| Number of shares authorized to repurchase | 8,000,000 | 6,000,000 | 3,000,000 | 1,000,000 | |||||
| Share repurchase plan | Open market purchases, privately negotiated block trades, unsolicited negotiated transactions, and/or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities and Exchange Commission | ||||||||
| Tender offer to purchase common stock price per share | $ 3.25 | ||||||||
| Percentage of outstanding common shares purchased under tender offer | 7.76% | ||||||||
| Tender offer sales price | $ 2.29 | ||||||||
| Treasury stock, shares | 5,801,086 | 5,801,086 | 5,801,086 | ||||||
| Maximum [Member] | |||||||||
| Equity, Class of Treasury Stock [Line Items] | |||||||||
| Tender offer to purchase common stock shares | 750,000 | ||||||||
| Common Stock [Member] | |||||||||
| Equity, Class of Treasury Stock [Line Items] | |||||||||
| Treasury stock, shares | 5,801,086 | 5,801,086 | |||||||
| Repurchase agreement, purchase price per share | $ 3.37 | $ 0.00 | $ 4.50 | ||||||
| Number of shares repurchased | 0 | 19,729 | |||||||
| X | ||||||||||
- Definition Percentage of outstanding common shares purchases under tender offer. No definition available.
|
| X | ||||||||||
- Definition Tender offer sales price. No definition available.
|
| X | ||||||||||
- Definition Tender offer to purchase common stock price per share. No definition available.
|
| X | ||||||||||
- Definition Tender offer to purchase common stock shares. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
|
| X | ||||||||||
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Description of share repurchase program, including accounting treatment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|