Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Capital Stock and Stock Restrictions (Details Textual)

v2.4.1.9

Capital Stock and Stock Restrictions (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Aug. 29, 2011	May 14, 2015
Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Class A Common Stock [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	336,000	162,000	5,788,000
Common Stock, Shares, Outstanding	46,839,361	45,852,740	44,970,000	50,429,000
Class B Common Stock [Member]
Class of Stock [Line Items]
Common Stock, Shares, Outstanding	13,937,151	13,937,151	13,937,000	13,937,000
August Two Thousand Eleven Authorization [Member] \| Class A Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount					$ 20.0
Treasury Stock, Shares, Acquired			5,700,000
Treasury Stock Acquired, Average Cost Per Share			2.20
Stock Repurchase Program Remaining Authorized Repurchases Amount	0.1
Outside of Publically Announced Repurchase Program [Member] \| Class A Common Stock [Member]
Class of Stock [Line Items]
Treasury Stock Acquired, Average Cost Per Share	2.57	2.22	2.32
Shares Paid for Tax Withholding for Share Based Compensation	335,890	161,699	133,816
Voting trust and other trusts [Member] \| Class B Common Stock [Member]
Class of Stock [Line Items]
Common Stock, Shares, Outstanding	13,937,150
Subsequent Event [Member] \| Voting Trust [Member]
Class of Stock [Line Items]
Voting Control						50.50%
Subsequent Event [Member] \| Voting trust and other trusts [Member]
Class of Stock [Line Items]
Voting Control						54.40%

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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 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 50

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-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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-Subparagraph (SX 210.5-02.29)

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

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Number of shares that have been repurchased during the period and are being held in treasury.

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Voting Control over the Company

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