CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 64,993	$ 60,836	$ 182,827	$ 176,287
Cost of sales	31,600	29,416	89,419	86,430
Gross profit	33,393	31,420	93,408	89,857
Operating expenses
Selling, general and administrative	25,261	21,895	69,317	64,016
Business Acquisition, Transaction Costs	2,556	0	2,766	0
Amortization of intangible assets	1,357	988	3,183	2,968
Income from operations	4,219	8,537	18,142	22,873
Interest and other expense, net	380	326	1,022	922
Income before provision for income taxes	3,839	8,211	17,120	21,951
Provision for income taxes	1,982	2,182	6,600	7,063
Net income	1,857	6,029	10,520	14,888
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax	82	(118)	(57)	(135)
Comprehensive income	$ 1,939	$ 5,911	$ 10,463	$ 14,753
Net income per common share
Basic (in dollars per share)	$ 0.20	$ 0.65	$ 1.14	$ 1.59
Diluted (in dollars per share)	$ 0.20	$ 0.65	$ 1.14	$ 1.59
Weighted average common shares outstanding
Basic (in shares)	9,246,902	9,310,097	9,235,063	9,390,765
Dilutive effect of equity awards (in shares)	10,648	0	3,549	0
Diluted (in shares)	9,257,550	9,310,097	9,238,612	9,390,765
Cash dividend declared per common share (in dollars per share)	$ 0	$ 0	$ 0.25	$ 0