Capital Stock	9 Months Ended
Oct. 31, 2013
Equity [Abstract]
Capital Stock	Capital Stock On October 16, 2012 and December 13, 2012, the Company entered into separate, privately negotiated exchange agreements with certain holders of its Series A Cumulative Perpetual Convertible Preferred Stock (“Series A preferred stock”) to exchange such stock for shares of the Company's Class A common stock. Under the terms of the agreements, holders exchanged $209,447,600 in aggregate amount of liquidation preference consisting of 4,188,952 shares of Series A preferred stock, for 13,852,435 shares of Class A common stock. The amount of common shares issued was equivalent to the initial conversion price of $15.12 per share of Class A common stock. The Company made aggregate cash payments of $19,069,000 to the holders for additional exchange consideration, including dividends that would have been payable on December 17, 2012 and March 15, 2013. Under the accounting guidance for induced conversions of convertible preferred stock, the cash inducement payments were recorded as a reduction to retained earnings. From January 31, 2013 to March 14, 2013, 109,768 shares of Series A preferred stock were converted into 362,990 shares of Class A common stock in accordance with the original terms of the Series A preferred stock. On March 15, 2013, the Company redeemed the remaining 101,270 shares of Series A preferred stock for approximately $5,100,000, the aggregate amount of liquidation preference plus the dividend that was due and payable on March 15, 2013. On March 13, 2013, the Company and the counterparties settled an equity call hedge transaction that was entered into in connection with the original issuance of the Series A preferred stock. As a result, the Company received 765,134 shares of Class A common stock valued at $16.82 per share for a total of $12,868,000 and cash payments of $10,231,000. In accordance with accounting guidance on equity hedge transactions, amounts received upon settlement of equity call hedge transactions in which the Company has the choice of net share settlement or net cash settlement are reflected as an increase to additional paid-in capital. The Company declared and paid Series A preferred stock dividends of $0 and $185,000 during the three and nine months ended October 31, 2013 and $3,850,000 and $11,550,000 during the three and nine months ended October 31, 2012. On April 16, 2013, the Company entered into separate, privately negotiated exchange agreements with certain noteholders of the 2014 Senior Notes to exchange such notes for Class A common stock. Under the terms of the agreements, noteholders agreed to exchange $138,853,000 in aggregate principal amount of 2014 Senior Notes for a total of 9,549,721 shares of Class A common stock and a cash payment of $4,860,000 for additional exchange consideration, accrued interest and in lieu of fractional shares. On May 31, 2013, pursuant to the terms of the Indenture governing the 2014 Senior Notes, the Company issued a put termination notice to the noteholders. Pursuant to the Indenture, following the put termination notice, noteholders of the 2014 Senior Notes were permitted to put such notes to the Company through June 20, 2013. As of July 12, 2013, the last settlement date for noteholders to put the 2014 Senior Notes to the Company, $60,033,000 aggregate principal amount of the 2014 Senior Notes were put, for which noteholders received 4,128,806 shares of Class A common stock and cash payments totaling $1,088,000 for interest payable to October 15, 2013 and in lieu of fractional shares.

Capital Stock

9 Months Ended

Oct. 31, 2013

On October 16, 2012 and December 13, 2012, the Company entered into separate, privately negotiated exchange agreements with certain holders of its Series A Cumulative Perpetual Convertible Preferred Stock (“Series A preferred stock”) to exchange such stock for shares of the Company's Class A common stock. Under the terms of the agreements, holders exchanged $209,447,600 in aggregate amount of liquidation preference consisting of 4,188,952 shares of Series A preferred stock, for 13,852,435 shares of Class A common stock. The amount of common shares issued was equivalent to the initial conversion price of $15.12 per share of Class A common stock. The Company made aggregate cash payments of $19,069,000 to the holders for additional exchange consideration, including dividends that would have been payable on December 17, 2012 and March 15, 2013. Under the accounting guidance for induced conversions of convertible preferred stock, the cash inducement payments were recorded as a reduction to retained earnings.

From January 31, 2013 to March 14, 2013, 109,768 shares of Series A preferred stock were converted into 362,990 shares of Class A common stock in accordance with the original terms of the Series A preferred stock. On March 15, 2013, the Company redeemed the remaining 101,270 shares of Series A preferred stock for approximately $5,100,000, the aggregate amount of liquidation preference plus the dividend that was due and payable on March 15, 2013.

On March 13, 2013, the Company and the counterparties settled an equity call hedge transaction that was entered into in connection with the original issuance of the Series A preferred stock. As a result, the Company received 765,134 shares of Class A common stock valued at $16.82 per share for a total of $12,868,000 and cash payments of $10,231,000. In accordance with accounting guidance on equity hedge transactions, amounts received upon settlement of equity call hedge transactions in which the Company has the choice of net share settlement or net cash settlement are reflected as an increase to additional paid-in capital.

The Company declared and paid Series A preferred stock dividends of $0 and $185,000 during the three and nine months ended October 31, 2013 and $3,850,000 and $11,550,000 during the three and nine months ended October 31, 2012.

On April 16, 2013, the Company entered into separate, privately negotiated exchange agreements with certain noteholders of the 2014 Senior Notes to exchange such notes for Class A common stock. Under the terms of the agreements, noteholders agreed to exchange $138,853,000 in aggregate principal amount of 2014 Senior Notes for a total of 9,549,721 shares of Class A common stock and a cash payment of $4,860,000 for additional exchange consideration, accrued interest and in lieu of fractional shares.

On May 31, 2013, pursuant to the terms of the Indenture governing the 2014 Senior Notes, the Company issued a put termination notice to the noteholders. Pursuant to the Indenture, following the put termination notice, noteholders of the 2014 Senior Notes were permitted to put such notes to the Company through June 20, 2013. As of July 12, 2013, the last settlement date for noteholders to put the 2014 Senior Notes to the Company, $60,033,000 aggregate principal amount of the 2014 Senior Notes were put, for which noteholders received 4,128,806 shares of Class A common stock and cash payments totaling $1,088,000 for interest payable to October 15, 2013 and in lieu of fractional shares.