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Derivatives and Hedging Activities (Narrative) (Details) (USD $)
 1 Months Ended 12 Months Ended
Sep. 30, 2011
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Jan. 02, 2008
Unsecured Notes Payable to Bank [Member]
Jun. 30, 2013
Foreign Exchange Contract [Member]
Notional amount of foreign currency contracts outstanding           $ 79,900,000
Net foreign exchange derivative contract (gain) loss 2,500,000 (733,000) 1,480,000 2,706,000    
Currency devaluation, percentage 11.80%          
Long-term debt         $ 25,000,000