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Debt (Details Textual) (USD $)
 12 Months Ended
Jun. 30, 2012
EBITA
Jun. 30, 2011
Debt (Textual) [Abstract]    
Senior secured revolving credit facility $ 125,000,000 $ 75,000,000
Limit on asset dispositions 15,000,000  
Additional Margin on LIBOR loans, Minimum 1.75%  
Additional Margin on LIBOR loans, Maximum 2.50%  
Additional Margin on alternate base rate loans, Minimum 0.75%  
Additional Margin on alternate base rate loans, Maximum 1.50%  
Senior Leverage Ratio, Maximum 2.50%  
Senior Leverage Ratio, Minimum 1.00%  
Fixed Charge Coverage Ratio, Maximum 1.25%  
Fixed Charge Coverage Ratio, Minimum 1.00%  
Maximum limit of consolidated funded indebtedness 2.5  
Consolidated EBITDA as defined in the Credit Agreement 46,100,000  
Consolidated funded indebtedness limit 115,300,000  
Additional Margin on CDOR loans, Minimum 1.75%  
Additional Margin on CDOR loans, Maximum 2.50%  
Additional Margin on Canadian prime rate loans, Minimum 2.25%  
Additional Margin on Canadian prime rate loans, Maximum 3.00%  
CDOR Rate description Sum of the annual rate of interest which is the rate determined as being the arithmetic average of the quotations of all institutions listed in respect of the relevant CDOR interest period for Canadian Dollar denominated bankers’ acceptances, plus 0.1%  
Canadian prime rate description Greater of (i) the rate of interest per annum most recently announced or established by JPMorgan Chase Bank, N.A., Toronto Branch as its reference rate in effect on such day for determining interest rates for Canadian Dollar denominated commercial loans in Canada and (ii) the CDOR Rate plus 1.0%  
Sublimit on Canadian dollar borrowings $ 15,000,000  
Minimum [Member]
    
Line of Credit Facility [Line Items]    
Unused Credit Facility Fee 0.30%  
Maximum [Member]
    
Line of Credit Facility [Line Items]    
Unused Credit Facility Fee 0.45%