Annual report pursuant to Section 13 and 15(d)

SERIES A PREFERRED STOCK Series A Preferred Stock (Details)

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SERIES A PREFERRED STOCK Series A Preferred Stock (Details) - Series A Preferred Stock - USD ($)
$ / shares in Units, $ in Millions
Dec. 23, 2011
Jan. 31, 2013
Jul. 31, 2011
Class of Stock [Line Items]      
Preferred stock, shares authorized (in shares)     10,000,000
Preferred stock, par value $ 100   $ 0.01
Preferred stock, shares issued (in shares) 1,400,000    
Exchange of advances from SEACOR for Series A Preferred Stock $ 140.0    
Shares exchanged (in shares)   1,400,000