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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (preferred stock common stock) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011
Preferred Stock, Shares Authorized | 6,445,248 |  |
Preferred Stock | $ 5,422 | 6,268 |
Common Stock | 2,955 | 2,938 |
6% Cumulative Preferred Stock [Member] |  |  |
Preferred Stock, Dividend Rate, Percentage | 6.00% |  |
Preferred Stock, Par or Stated Value Per Share | $ 0.25 |  |
Preferred Stock, Shares Authorized | 200,000 |  |
Preferred Stock, Shares Outstanding | 200,000 | 200,000 | 200,000
Preferred Stock | 50 |  |
10% Nonredeemable Convertible Preferred Stock [Member] |  |  |
Preferred Stock, Dividend Rate, Percentage | 10.00% |  |
Preferred Stock, Par or Stated Value Per Share | $ 0.025 |  |
Preferred Stock, Shares Authorized | 1,400,000 |  |
Preferred Stock, Shares Outstanding | 807,240 | 807,240 | 807,240
Preferred Stock | 202 |  |
Participating Preferred Stock [Member] |  |  |
Preferred Stock, Par or Stated Value Per Share | $ 0.025 |  |
Preferred Stock, Shares Authorized | 91,962 |  |
Preferred Stock, Shares Outstanding | 91,962 | 97,870 | 102,047
Preferred Stock | 1,097 |  |
2003 Series Participating Preferred Stock [Member] |  |  |
Preferred Stock, Par or Stated Value Per Share | $ 0.025 |  |
Preferred Stock, Shares Authorized | 262,790 |  |
Preferred Stock, Shares Outstanding | 262,790 | 312,790 | 313,304
Preferred Stock | 4,073 |  |
Common Class A Member |  |  |
Common Stock Par Or Stated Value Per Share | $ 0.25 |  |
Common Stock, Shares Authorized | 20,000,000 |  |
Common Stock, Shares, Outstanding | 8,705,243 | 9,591,677 | 9,607,809
Common Stock | 2,441 |  |
Common Class B Member |  |  |
Common Stock Par Or Stated Value Per Share | $ 0.25 |  |
Common Stock, Shares Authorized | 10,000,000 |  |
Common Stock, Shares, Outstanding | 2,055,424 | 2,097,312 | 2,127,822
Common Stock | $ 514 |  |

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- Definition Face amount or stated value of common stock per share; generally not indicative of the fair market value per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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