Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Narrative (Details)

v3.5.0.2
Share-Based Payments - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Mar. 31, 2015
Jun. 30, 2016
Jun. 30, 2015
Sep. 30, 2015
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock awards unvested (in shares) 31,787     31,787    
2012 Equity Incentive Plan | Stock Compensation Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Term of plan       10 years    
Maximum number of shares available for grants or awards (in shares) 2,500,000     2,500,000    
Shares reserved for future issuance under award plan (in shares) 1,022,548     1,022,548    
All Plans            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock-based compensation cost $ 2,673 $ 2,274   $ 7,940 $ 6,838  
Future income tax benefit from compensation expense recognized 1,042 887   3,097 2,667  
Cash received from stock options exercised 3,383 129   5,181 3,907  
Tax benefit realized from options exercised $ 524 $ 16   $ 747 337  
All Plans | Employee Stock Option            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting increment       33.00%    
Expiration period       10 years    
Intrinsic value of options exercised       $ 2,087 $ 897  
Outstanding, beginning of period (in shares) 107,932     107,932   337,938
All Plans | Employee Stock Option | After 3 Years            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       3 years    
Vesting increment       33.00%    
All Plans | Employee Stock Option | After 4 Years            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       4 years    
Vesting increment       33.00%    
All Plans | Employee Stock Option | After 5 Years            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       5 years    
Vesting increment       33.00%    
All Plans | Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period       5 years    
Unrecognized compensation cost on non-vested awards $ 11,143     $ 11,143    
Weighted average period of recognition of unrecognized compensation cost on non-vested awards     1 year 8 months 12 days      
All Plans | Restricted Stock | After 3 Years            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       3 years    
Vesting increment       50.00%    
2014 Director Fee Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares reserved for future issuance under award plan (in shares) 150,000     150,000    
Annual retainer fee paid to non-employee directors       $ 75    
Annual retainer fee paid to non-employee Chairman of the Board       $ 175    
Director Fee Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares deferred under stock based compensation plan 17,005     17,005    
Value of annual stock based grant       $ 110    
Total stock options granted to date (in shares) 22,300     22,300    
Outstanding, beginning of period (in shares) 0     0    
Total restricted stock awards granted to date (in shares) 152,290     152,290    
Restricted stock awards unvested (in shares) 49,140     49,140    
Fiscal 2013 and Thereafter | All Plans | Restricted Stock | After 3 Years            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       3 years    
Vesting increment       50.00%    
Fiscal 2013 and Thereafter | All Plans | Restricted Stock | Attainment of Pre-Defined Levels of Appreciation in Market Value            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting increment       8.33%    
Fiscal 2013 and Thereafter | All Plans | Restricted Stock | Attainment of Pre-Defined Levels of Adjusted Earnings Per Share            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting increment       8.33%