Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2011	Sep. 30, 2010
Consolidated Balance Sheets [Abstract]
Trade, allowance	$ 2,645	$ 3,360
LONG TERM RECEIVABLES, allowance	$ 59	$ 4,069
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	15,407,802	15,407,802
Common stock, shares outstanding	14,938,071	14,773,904
Treasury stock, shares	451,329	633,898