Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Jun. 30, 2010
Current assets:
Allowance for accounts receivable	$ 26,562	$ 21,907
Shareholders' equity:
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	27,109,932	26,703,038
Common stock, shares outstanding	27,109,932	26,703,038