Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - 3 months ended Dec. 31, 2015 - USD ($) shares in Thousands, $ in Thousands	Total	Common Shares Issued [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Sep. 30, 2015	$ 165,873		$ 117,151	$ 51,052	$ (2,330)
Beginning balance, Shares at Sep. 30, 2015		41,838
Cash dividends paid	(8,407)			(8,407)
Exercise of stock options	1,391		1,391
Exercise of stock options, Shares		91
Conversion of restricted stock units		115
Stock compensation expense	1,611		1,611
Net earnings	8,893			8,893
Foreign currency translation adjustment	(787)				(787)
Ending balance at Dec. 31, 2015	$ 168,574		$ 120,153	$ 51,538	$ (3,117)
Ending balance, Shares at Dec. 31, 2015		42,044