Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
Current assets:
Allowance, accounts receivable	$ 4,891	$ 2,322
Stockholders' equity:
Preferred stock, par value	$ 0.003	$ 0.003
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.001455	$ 0.001455
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	72,960	72,960
Treasury stock, shares	4,232	4,070
Treasury stock held for deferred compensation, shares	275	315