CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenue	$ 36,131	$ 29,256	$ 100,747	$ 85,272
Direct expenses	27,793	22,871	78,429	66,805
Gross margin	8,338	6,385	22,318	18,467
General and administrative expenses	5,136	4,122	14,700	12,722
Depreciation and amortization	588	510	1,654	1,264
Income from operations	2,614	1,753	5,964	4,481
Interest expense, net	262	269	801	888
Income before income taxes	2,352	1,484	5,163	3,593
Income tax expense, net	738	539	5,084	1,345
Net income	$ 1,614	$ 945	$ 79	$ 2,248
Net income per share, basic (in dollars per share)	$ 0.14	$ 0.08	$ 0.01	$ 0.20
Net income per share - diluted (in dollars per share)	$ 0.13	$ 0.08	$ 0.01	$ 0.18
Weighted average common shares outstanding
Basic (in shares)	11,899	11,299	11,875	11,250
Diluted (in shares)	12,884	12,445	12,872	12,417