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Company Redemption of Series A Preferred Stock in Stockholders' Equity (Details) (USD $)
3 Months Ended
Jun. 30, 2011
Stock Redemption of Preferred Stock During Period [Abstract]  
Series A preferred stock redemption date Jun. 01, 2011
Company redeemed Series A 8 1/2% preferred stock 6,100,000
Preferred stock, dividend percentage rate 8.50%
Redemption price per share $ 25