Consolidated Statements Of Stockholders' Equity And Comprehensive Income (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Non-Controlling Interest [Member]	Comprehensive Income (Loss) [Member]	Total
Balance at Sep. 30, 2010	$ 945	$ 32,688	$ (783)	$ 45,940	$ 913		$ 79,703
Balance, shares at Sep. 30, 2010	9,452,765
Stock-based compensation arrangements	4	1,034	0	0	0		1,038
Stock-based compensation arrangements, shares	39,338
Dividends	0	0	0	(10,370)	(241)		(10,611)
Net income	0	0	0	13,816	303	14,119	14,119
Foreign currency translation adjustment	0	0	1,084	0	18	1,102	1,102
Defined benefit pension and postretirement plans activity	0	0	(4)	0	0	(4)	(4)
Comprehensive Income						15,217
Balance at Mar. 31, 2011	949	33,722	297	49,386	993		85,347
Balance, shares at Mar. 31, 2011	9,492,103
Balance at Sep. 30, 2011	946	33,791	(3,129)	49,724	1,076		82,408
Balance, shares at Sep. 30, 2011	9,462,807						9,462,807
Stock-based compensation arrangements	6	1,416	0	0	0		1,422
Stock-based compensation arrangements, shares	52,422
Dividends	0	0	0	(10,426)	(324)		(10,750)
Net income	0	0	0	12,035	289	12,324	12,324
Foreign currency translation adjustment	0	0	(370)	0	(21)	(391)	(391)
Defined benefit pension and postretirement plans activity	0	0	157	0	0	157	157
Comprehensive Income						12,090
Balance at Mar. 31, 2012	$ 952	$ 35,207	$ (3,342)	$ 51,333	$ 1,020		$ 85,170
Balance, shares at Mar. 31, 2012	9,515,229						9,515,229