Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenues	$ 109,351	$ 90,184
Cost of goods sold	94,720	79,630
Gross profit	14,631	10,554
Selling, general and administrative expenses	15,928	16,215
Research and development expenses	1,694	1,658
Amortization of intangible assets	44	73
Operating loss	(3,035)	(7,392)
Other income	0	(507)
Interest expense	56	51
Interest income	(157)	(203)
Loss before income taxes	(2,934)	(6,733)
Income tax benefit	(239)	(1,071)
Net loss	$ (2,695)	$ (5,662)
Loss per share:
Basic (in dollars per share)	$ (0.23)	$ (0.49)
Diluted (in dollars per share)	$ (0.23)	$ (0.49)
Weighted average shares:
Basic (in shares)	11,551	11,497
Diluted (in shares)	11,551	11,497
Dividends per share (in dollars per share)	$ 0.26	$ 0.26