Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenues	$ 90,184	$ 110,341
Cost of goods sold	79,630	95,342
Gross profit	10,554	14,999
Selling, general and administrative expenses	16,215	15,698
Research and development expenses	1,658	1,469
Amortization of intangible assets	73	88
Operating loss	(7,392)	(2,256)
Other income	(507)	(507)
Interest expense	51	34
Interest income	(203)	(42)
Loss before income taxes	(6,733)	(1,741)
Income tax benefit	(1,071)	(1,441)
Net loss	$ (5,662)	$ (300)
Loss per share:
Basic (in dollars per share)	$ (0.49)	$ (0.03)
Diluted (in dollars per share)	$ (0.49)	$ (0.03)
Weighted average shares:
Basic (in shares)	11,497	11,438
Diluted (in shares)	11,497	11,438
Dividends per share (in dollars per share)	$ 0.26	$ 0.26