Annual report pursuant to Section 13 and 15(d)

Capital Stock and Stock Restrictions (Details Textual)

v2.4.0.8
Capital Stock and Stock Restrictions (Details Textual) (USD $)
12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2014
Preferred Stock [Member]
Mar. 31, 2013
Preferred Stock [Member]
Mar. 31, 2014
Class A Common Stock [Member]
Mar. 31, 2013
Class A Common Stock [Member]
Mar. 31, 2012
Class A Common Stock [Member]
Mar. 31, 2011
Class A Common Stock [Member]
Mar. 31, 2012
Class B Common Stock [Member]
Mar. 31, 2014
Class B Common Stock [Member]
Mar. 31, 2013
Class B Common Stock [Member]
Mar. 31, 2011
Class B Common Stock [Member]
Aug. 31, 2011
August Two Thousand Eleven Authorization [Member]
Class A Common Stock [Member]
Mar. 31, 2014
August Two Thousand Eleven Authorization [Member]
Class A Common Stock [Member]
Mar. 31, 2013
August Two Thousand Eleven Authorization [Member]
Class A Common Stock [Member]
Mar. 31, 2012
August Two Thousand Eleven Authorization [Member]
Class A Common Stock [Member]
May 31, 2011
February Two Thousand Ten Authorization [Member]
Class A Common Stock [Member]
Feb. 28, 2010
February Two Thousand Ten Authorization [Member]
Class A Common Stock [Member]
May 31, 2011
February Two Thousand Ten Authorization [Member]
Class B Common Stock [Member]
Mar. 31, 2014
Outside of Publically Announced Repurchase Program [Member]
Class A Common Stock [Member]
Mar. 31, 2013
Outside of Publically Announced Repurchase Program [Member]
Class A Common Stock [Member]
Mar. 31, 2012
Outside of Publically Announced Repurchase Program [Member]
Class A Common Stock [Member]
Mar. 31, 2014
Voting trust and other trusts [Member]
Class B Common Stock [Member]
May 14, 2014
Subsequent Event [Member]
Voting Trust [Member]
May 14, 2014
Subsequent Event [Member]
Voting trust and other trusts [Member]
Class of Stock [Line Items]                                                    
Preferred Stock, Shares Authorized       1,000,000 1,000,000                                          
Stock Repurchase Program, Authorized Amount                           $ 20,000,000         $ 10,000,000              
Treasury Stock, Shares, Acquired           162,000 5,788,000 6,552,000             0 5,700,000 6,400,000 1,000,000                
Treasury Stock Acquired, Average Cost Per Share                               $ 2.20 $ 2.63 $ 3.43     $ 2.22 $ 2.32 $ 3.52      
Common Stock, Shares, Outstanding           45,852,740 44,969,841 50,429,000 54,174,000 13,937,000 13,937,151 13,937,151 14,556,000                     13,937,150    
Stock Repurchase Program Remaining Authorized Repurchases Amount                             100,000                      
Shares Paid for Tax Withholding for Share Based Compensation                                         161,699 133,816 113,734      
Conversion of Stock, Shares Converted               619,000   619,000                   618,664            
Payments for Repurchase of Common Stock $ 359,000 $ 12,733,000 $ 17,385,000                             $ 3,400,000                
Voting Control                                                 50.90% 54.90%