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Incentive Plans Incentive Plans: Narrative (Details) (USD $)
 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2014
plan
Mar. 31, 2013
Mar. 31, 2014
plan
Mar. 31, 2013
Jun. 30, 2013
Mar. 31, 2014
Equity Incentive Plans
Mar. 31, 2014
Equity Incentive Plans
Mar. 31, 2013
Equity Incentive Plans
Mar. 31, 2014
Equity Incentive Plans
Stock Options [Member]
Mar. 31, 2013
Equity Incentive Plans
Stock Options [Member]
Mar. 31, 2014
Equity Incentive Plans
Stock Options [Member]
Mar. 31, 2013
Equity Incentive Plans
Stock Options [Member]
Mar. 31, 2014
Equity Incentive Plans
Stock Options [Member]
Maximum
Mar. 31, 2014
Equity Incentive Plans
Restricted Stock [Member]
Mar. 31, 2013
Equity Incentive Plans
Restricted Stock [Member]
Mar. 31, 2014
Equity Incentive Plans
Restricted Stock [Member]
Mar. 31, 2013
Equity Incentive Plans
Restricted Stock [Member]
Mar. 31, 2014
Equity Incentive Plans
Restricted Stock [Member]
Maximum
Mar. 31, 2014
2013 Equity Plan Incentive [Member]
Stock Options [Member]
Dec. 31, 2010
2013 Equity Plan Incentive [Member]
Stock Options [Member]
Mar. 31, 2014
2013 Equity Plan Incentive [Member]
Restricted Stock [Member]
Dec. 31, 2010
2013 Equity Plan Incentive [Member]
Restricted Stock [Member]
Mar. 31, 2014
2010 Equity Incentive Plan
Stock Options [Member]
Dec. 31, 2010
2010 Equity Incentive Plan
Stock Options [Member]
Mar. 31, 2014
2010 Equity Incentive Plan
Restricted Stock [Member]
Dec. 31, 2010
2010 Equity Incentive Plan
Restricted Stock [Member]
Mar. 31, 2014
2006 Equity Incentive Plan
Stock Options [Member]
Dec. 31, 2006
2006 Equity Incentive Plan
Stock Options [Member]
Mar. 31, 2014
2006 Equity Incentive Plan
Restricted Stock [Member]
Dec. 31, 2006
2006 Equity Incentive Plan
Restricted Stock [Member]
Mar. 31, 2014
Stock Option Plans
Mar. 31, 2014
Stock Option Plans
Mar. 31, 2014
Stock Option Plans
Stock Options [Member]
Mar. 31, 2014
Stock Option Plans
Stock Options [Member]
Mar. 31, 2013
Stock Option Plans
Stock Options [Member]
Mar. 31, 2014
Stock Option Plans
Stock Options [Member]
Maximum
Dec. 31, 2003
2003 Stock Option Plan
Stock Options [Member]
Mar. 31, 2014
1996 Stock Option Plan
Stock Options [Member]
Dec. 31, 1996
1996 Stock Option Plan
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                                              
Number of share-based compensation plans 5   5                                                                        
Share-based compensation expense $ 126,000 $ 157,000 $ 387,000 $ 396,000                                                                      
Income tax benefit recognized for share-based compensation plans (130,000) (14,000) (122,000) (85,000)                                                                      
Number of shares authorized for Equity Incentive Plan                                       300,000   300,000   586,250   288,750   365,000   185,000             352,500   1,150,000.00
Annual limitation on awards granted to an individual under Equity Incentive Plan                                     60,000   45,000   117,250   43,312   73,000   27,750                    
Award vesting period                         5 years         5 years                                   5 years      
Maximum term for stock awards                         10 years                                             10 years      
Term used to calculate expected volatility                     84 months                                             84 months          
Stock options, Exercised           9,000 49,500   9,000   49,500 42,000       20,000                             0 0              
Stock options, Forfeitured           9,500 31,300   9,500   31,300 24,000                                     50,000 138,000 50,000 138,000 7,500        
Stock Issued During Period, Shares, New Issues                   14,000   20,000                                                      
Granted           20,000 20,000                 15,000                             0 0              
Number of shares available for grant                 499,750 188,450 499,750 188,450   460,350 169,600 460,350 169,600                               0 0 14,900     0  
Unrecognized share-based compensation expense, stock options           717,000 717,000 1,100,000                                             0 0              
Unrecognized share-based compensation expense, restricted stock                           529,000 568,000 529,000 568,000                                            
Share-based compensation cost not yet recognized, weighted average period for recognition                     2 years 0 months 0 days 2 years 5 months 0 days       2 years 3 months 0 days 2 years 2 months 0 days                                            
Forfeiture rate for Equity Incentive Plans                     20.00% 20.00%       20.00% 20.00%                                            
Treasury stock, Shares used to fund Equity Incentive Plans for restricted stock 8,045,488   8,045,488   7,275,466                                 300,000       288,750       185,000                  
Restricted stock, Vesting and distribution                           0 800 0                                              
Restricted stock, Forfeited                           0 1,500 5,750                                              
Restricted stock, Fair value of shares vested and distributed                               $ 0 $ 9,000