CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 152,801	$ 57,852
Contract costs	132,686	46,005
General and administrative costs	6,911	6,150
Depreciation and amortization	1,985	2,062
Total operating costs	141,582	54,217
Income from operations	11,219	3,635
Interest expense, net	672	1,080
Income before income taxes	10,547	2,555
Income tax expense	2,743	741
Net income	$ 7,804	$ 1,814
Net income per share - basic (in dollars per share)	$ 0.61	$ 0.15
Net income per share - diluted (in dollars per share)	$ 0.55	$ 0.13
Weighted average common stock outstanding
Basic (in shares)	12,749	12,498
Diluted (in shares)	14,295	13,445