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Income Taxes (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Difference between expected income tax provision applying domestic federal statutory tax rate and reported income tax provision      
Expected provision for Federal income taxes at the statutory rate $ 10,670 $ 10,710 $ 2,519
State income taxes, net of Federal benefit 970 1,095 268
Charges without tax benefit 1,004 16 96
Change in valuation allowance (544)    
Cumulative non-deductible expenses 2,139    
IRC S199 deduction (687) (187) (349)
Other (250)    
Provision for income taxes $ 13,302 $ 11,634 $ 2,534