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Stockholders' Equity Narrative (Details)
Jun. 23, 2015
$ / shares
shares
Class of Stock [Line Items]  
Stockholders' equity, maximum ownership percentage of common stock 9.80%
Class of right, number of securities called by rights (shares) | shares 1
Series A Preferred Stock  
Class of Stock [Line Items]  
Preferred stock, par or stated value per share | $ / shares $ 156.26