Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Revenues	$ 144,082	$ 136,192	$ 414,170	$ 376,537
Cost of services	119,030	113,526	344,707	315,728
Gross profit	25,052	22,666	69,463	60,809
Selling, general and administrative expenses	20,546	19,110	58,653	55,855
Gain (loss) on sale of assets	(47)	(10)	(40)	(73)
Income from operations	4,553	3,566	10,850	5,027
Interest and other (income) expense:
Interest expense	261	348	860	1,267
Other (income) expense, net	(9)	1	(208)	(211)
Income from operations before income taxes	4,301	3,217	10,198	3,971
Provision (benefit) for income taxes	339	422	908	465
Net income from continuing operations	3,962	2,795	9,290	3,506
Net loss from discontinued operations	(5)	(122)	(231)	(313)
Net income	3,957	2,673	9,059	3,193
Unrealized loss on interest hedge, net of tax	0	(14)	0	(21)
Comprehensive income	$ 3,957	$ 2,659	$ 9,059	$ 3,172
Basic earnings (loss) per share:
From continuing operations	$ 0.19	$ 0.15	$ 0.43	$ 0.19
From discontinued operations	0	(0.01)	(0.01)	(0.02)
Basic	0.19	0.14	0.42	0.17
Diluted earnings (loss) per share:
From continuing operations	0.19	0.15	0.43	0.19
From discontinued operations	0	(0.01)	(0.01)	(0.02)
Diluted	$ 0.19	$ 0.14	$ 0.42	$ 0.17
Shares used in the computation of earnings (loss) per share
Basic	21,319,444	18,464,933	21,542,289	18,450,935
Diluted	21,370,634	18,521,628	21,589,437	18,509,984