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Shareholders' Equity (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 760 $ 227 $ 1,922 $ 560
Option vesting period, years     3 years  
Period from grant date in which options start to vest     3 months  
Weighted-average fair value of options granted (in dollars per share) $ 7.61   $ 7.61  
Total intrinsic value of options 51 61 612 670
Proceeds from exercise of stock options 9   142 235
Unrecognized compensation costs related to non-vested stock option arrangements 648   648  
Weighted-average period for RSUs expense     2 years 7 months 17 days  
Annualized estimated forfeiture rate (in percent)     10.00%  
Total number of unvested RSUs (in shares)     660,630  
RSU vesting rate (in percent) 33.33%   33.33%  
Number of restricted stock units subject to vesting condition, shares     660,630  
Fair value of RSUs     4,619,795 1,198
Weighted-average fair value per share RSUs     $ 14.77 $ 6.77
Restricted stock compensation expense 683 185 1,765 431
Total unrecognized compensation cost $ 7,000   $ 7,000  
Weighted-average period for RSUs expense     2 years 3 months 27 days  
Minimum
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period from grant date     7 years  
Maximum
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period from grant date     10 years  
Restricted Stock Units (RSUs)
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total number of unvested RSUs (in shares)     660,630  
Number of restricted stock units subject to vesting condition, shares     660,630