Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - 3 months ended Dec. 31, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Balance at Sep. 30, 2016	$ 335,317	$ 122	$ 52,003	$ 331,959	$ (24,999)	$ (23,768)
Balance, shares at Sep. 30, 2016		12,199			806
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(300)			(300)
Foreign currency translation adjustments	(2,611)					(2,611)
Stock-based compensation	1,009		1,009
Stock-based compensation, shares		19
Shares withheld in lieu of employee tax withholding	(398)		(398)
Issuance of restricted stock	0	$ 0
Issuance of restricted stock, shares		0
Dividends paid	(2,966)			(2,966)
Balance at Dec. 31, 2016	$ 330,051	$ 122	$ 52,614	$ 328,693	$ (24,999)	$ (26,379)
Balance, shares at Dec. 31, 2016		12,218			806