CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,475	$ 1,623
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, authorized	1,000,000	1,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.20	$ 0.20
Common stock, authorized	250,000,000	250,000,000
Common stock, issued	92,855,000	90,282,000
Common stock, outstanding	92,855,000	90,282,000