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Stock-Based Compensation and Employee Benefit Plans (Details 2)
$ / shares in Units, $ in Thousands
12 Months Ended
Sep. 30, 2015
USD ($)
$ / shares
shares
124  
Stock-Based Compensation and Employee Benefit Plans  
Exercise price (in dollars per share) $ 124
Options Outstanding  
Shares Outstanding | shares 72,098
Weighted Average Remaining Contractual Life 4 years 1 month 6 days
Weighted Average Exercise Price (in dollars per share) $ 124
Options Exercisable  
Shares Exercisable | shares 41,210
Weighted Average Exercise Price (in dollars per share) $ 124
Intrinsic value | $ $ 10,278
298  
Stock-Based Compensation and Employee Benefit Plans  
Exercise price (in dollars per share) $ 298
Options Outstanding  
Shares Outstanding | shares 22,650
Weighted Average Remaining Contractual Life 6 years 8 months 12 days
Weighted Average Exercise Price (in dollars per share) $ 298
Options Exercisable  
Shares Exercisable | shares 6,950
Weighted Average Exercise Price (in dollars per share) $ 298
Intrinsic value | $ $ 517
373  
Stock-Based Compensation and Employee Benefit Plans  
Exercise price (in dollars per share) $ 373
Options Outstanding  
Shares Outstanding | shares 106,080
Weighted Average Remaining Contractual Life 9 years 3 months 18 days
Weighted Average Exercise Price (in dollars per share) $ 373
Options Exercisable  
Shares Exercisable | shares 6,015
Weighted Average Exercise Price (in dollars per share) $ 373
396  
Stock-Based Compensation and Employee Benefit Plans  
Exercise price (in dollars per share) $ 396
Options Outstanding  
Shares Outstanding | shares 6,830
Weighted Average Remaining Contractual Life 6 years 7 months 6 days
Weighted Average Exercise Price (in dollars per share) $ 396
Options Exercisable  
Shares Exercisable | shares 2,251
Weighted Average Exercise Price (in dollars per share) $ 396
473  
Stock-Based Compensation and Employee Benefit Plans  
Exercise price (in dollars per share) $ 473
Options Outstanding  
Shares Outstanding | shares 10,745
Weighted Average Remaining Contractual Life 8 years 6 months
Weighted Average Exercise Price (in dollars per share) $ 473
Options Exercisable  
Shares Exercisable | shares 1,497
Weighted Average Exercise Price (in dollars per share) $ 473