CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenue	$ 246,094	$ 209,185
Contract costs	194,614	163,596
General and administrative costs	25,054	24,195
Corporate development costs	1,088	930
Depreciation and amortization	8,115	7,003
Total operating costs	228,871	195,724
Income from operations	17,223	13,461
Interest expense, net	3,784	3,441
Income before income taxes	13,439	10,020
Income tax expense	3,294	2,906
Net income	$ 10,145	$ 7,114
Earnings Per Share [Abstract]
Net income per share - basic (in dollars per share)	$ 0.81	$ 0.58
Net income per share - diluted (in dollars per share)	$ 0.75	$ 0.54
Weighted average common shares outstanding
Basic (in shares)	12,549	12,282
Diluted (in shares)	13,597	13,105