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Summary of Significant Accounting Policies (Detail Textuals) (USD $) In Millions, except Per Share data, unless otherwise specified | 1 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended
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Feb. 19, 2013 | Dec. 06, 2012 | Dec. 11, 2012 | Nov. 09, 2012 | Sep. 06, 2012 | Aug. 08, 2012 | Jun. 06, 2012 | May 02, 2012 | Nov. 10, 2009 | Mar. 29, 2013 | Dec. 28, 2012 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011 | May 07, 2013 Subsequent event | Jun. 28, 2013 Subsequent event
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.12 |  | $ 2.00 | $ 0.12 |  | $ 0.12 |  | $ 0.10 |  |  |  | $ 0.12 | $ 2.12 | $ 0.12 | $ 0.10 | $ 0.10 | $ 0.10 | $ 0.10 | $ 0.00 | $ 2.46 | $ 0.30 | $ 0.00 | $ 0.12 |
Dividend paid in cash (in dollars per share) |  | $ 0.12 |  |  | $ 0.12 |  | $ 0.10 |  |  | $ 0.12 | $ 2.00 |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.12
Withholding tax payable percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |
Percentage of stock dividend declared |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of re-capitalization of shareholders' equity from retained earnings to common stock |  |  |  |  |  |  |  |  | $ 6.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description of stock dividend derived |  |  |  |  |  |  |  |  | On November 10, 2009 the Boards of Directors declared a 10% stock dividend on December 7, 2009 to shareholders of record on November 20, 2009. As a result of this stock dividend, an entry of approximately $6.5 million was made to reflect the re-capitalization of shareholders' equity from retained earnings to common stock. This amount was derived from the quoted market value of the shares at the date of declaration ($6.10) times the number of shares issued as a result of the 10% stock dividend. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents amount of re-capitalization of shareholders' equity from retained earnings to common stock. + References No definition available. + Details
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- Definition Represents description of stock dividend derived. + References No definition available. + Details
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- Definition This element represents the percentage of withholding tax payable by the entity. + References No definition available. + Details
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- Definition Represents percentage of stock dividend. + References No definition available. + Details
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- Details
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 + Details
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