Annual report pursuant to Section 13 and 15(d)

Capital Stock and Stock Restrictions (Details Textual)

v3.3.0.814
Capital Stock and Stock Restrictions (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
May. 14, 2015
Mar. 31, 2012
Aug. 29, 2011
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%