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Share-based Compensation (Details 4) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 120 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Restricted stock
         
Restricted Stock          
Forfeiture rate used to calculate compensation expense (as a percent)     7.50% 7.50%  
Awards          
Nonvested at the beginning of the period (in shares)     74 155  
Granted (in shares)     38 35  
Vested (in shares)     (111) (113)  
Forfeited (in shares)     (1) (3)  
Nonvested at the end of the period (in shares)   74   74  
Weighted Average Grant-date Fair Value          
Nonvested at the beginning of the period     515 1,076  
Granted     190 127  
Vested     (693) (665)  
Forfeited     (12) (23)  
Nonvested at the end of the period   515   515  
Employee Stock Purchase Plan
         
Employee Stock Purchase Plan          
Purchase price lower of the fair market value of the common stock on the first day of the calendar quarter or the last day of the calendar quarter (as a percent)     85.00%    
Percentage of the compensation authorized by the employee to be withheld 10.00%   10.00%   10.00%
Company's common stock authorized for issuance under the ESPP (in shares) 1,125   1,125   1,125
Shares issued under the ESPP (in shares) 16 19 62 48 400