Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Components of Accrued liabilities
Accrued employee compensation and benefits	$ 1,574	$ 1,792
Accrued workers' compensation	668	674
Accrued dividends	1,073	1,060
Other accrued liabilities	1,638	1,100
Total accrued liabilities	$ 4,953	$ 4,626