Note 2 - Acquisition - Pro Forma Information (Details) - Triton Miami, Inc. [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Mar. 31, 2017	[1]	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Sales	$ 11,295		$ 13,783	$ 23,829	$ 25,160
Income from operations	87		405	745	859
Net income	$ 11		$ 164	$ 362	$ 400
Basic (in dollars per share)	$ 0		$ 0.02	$ 0.04	$ 0.04
Diluted (in dollars per share)	$ 0		$ 0.02	$ 0.04	$ 0.04

[1] These amounts are presented in the unaudited Consolidated Condensed Statement of Income for the quarter ended March 31, 2017.