Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012	Sep. 30, 2011
Consolidated Balance Sheets [Abstract]
Trade, allowance	$ 1,649	$ 1,788
LONG TERM RECEIVABLES, allowance	$ 0	$ 0
Preferred stock, par value	$ 0.01
Preferred stock, shares authorized	100,000,000
Preferred stock, shares issued	0
Preferred stock, shares outstanding	0
Common stock, par value	$ 0.01
Common stock, shares authorized	100,000,000
Common stock, shares issued	15,407,802	15,407,802
Common stock, shares outstanding	15,057,140	14,977,400
Treasury stock, shares	350,662		430,402