Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	(Accumulated Deficit) Retained Earnings [Member]	Non-Controlling Interest [Member]	Total
Balance at Sep. 30, 2013	$ 958	$ 39,465	$ (4,408)	$ 27,412	$ 1,585	$ 65,012
Balance, shares at Sep. 30, 2013	9,575,926
Stock-based compensation arrangements		852				852
Stock-based compensation arrangements, shares	1,948
Dividends				(21,082)	(499)	(21,581)
Net income				(25,203)	505	(24,698)
Foreign currency translation adjustment			(2,110)		(111)	(2,221)
Unrealized gains (losses) on available-for-sale securities, net of tax			34			34
Defined benefit pension and postretirement plans activity, net of tax			(3,664)			(3,664)
Balance at Sep. 30, 2014	$ 958	40,317	(10,148)	(18,873)	1,480	13,734
Balance, shares at Sep. 30, 2014	9,577,874
Stock-based compensation arrangements	$ 6	1,214				1,220
Stock-based compensation arrangements, shares	63,658
Dividends				(13,229)	(475)	(13,704)
Net income				14,543	506	15,049
Foreign currency translation adjustment			(2,975)		(379)	(3,354)
Unrealized gains (losses) on available-for-sale securities, net of tax			93			93
Defined benefit pension and postretirement plans activity, net of tax			(711)			(711)
Balance at Sep. 30, 2015	$ 964	41,531	(13,741)	(17,559)	1,132	$ 12,327
Balance, shares at Sep. 30, 2015	9,641,532					9,641,532
Stock-based compensation arrangements	$ 9	2,451				$ 2,460
Stock-based compensation arrangements, shares	85,732
Dividends				(10,705)	(414)	(11,119)
Net income				17,753	701	18,454
Foreign currency translation adjustment			772		2	774
Unrealized gains (losses) on available-for-sale securities, net of tax			(259)			(259)
Defined benefit pension and postretirement plans activity, net of tax			(2,038)			(2,038)
Balance at Sep. 30, 2016	$ 973	$ 43,982	$ (15,266)	$ (10,511)	$ 1,421	$ 20,599
Balance, shares at Sep. 30, 2016	9,727,264					9,727,264