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Equity (Details)
Nov. 08, 2007
shares
$ / shares
Apr. 02, 2016
$ / shares
Jan. 02, 2016
$ / shares
Equity [Line Items]      
Preferred stock, par value   $ 0.001 $ 0.001
Dividends Declared For Outstanding Common Stock One preferred stock purchase right    
Number Of Rights To Be Issued With Each Share Of Common Stock | shares 1    
Preferred Stock Voting Rights Per Share $ 1.000    
Series A Preferred Stock [Member]      
Equity [Line Items]      
Preferred stock, par value 0.001    
Purchase Price Per Right $ 136.00