Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (loss)	$ (18,577,000)	$ 10,348,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Bad debt expense	250,000	31,000
Deferred financing cost amortization	214,000	229,000
Depreciation and amortization	6,706,000	6,884,000
Gain on sale of assets	(39,000)	(68,000)
Deferred income taxes	34,622,000	494,000
Non-cash compensation	(395,000)	1,329,000
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable	4,992,000	(1,593,000)
Inventories	(1,721,000)	(3,919,000)
Costs and estimated earnings in excess of billings	(8,990,000)	(3,151,000)
Prepaid expenses and other current assets	(1,645,000)	(9,082,000)
Other non-current assets	270,000	350,000
Accounts payable and accrued expenses	(6,862,000)	600,000
Billings in excess of costs and estimated earnings	(4,019,000)	6,438,000
Other non-current liabilities	172,000	1,312,000
Net cash provided by operating activities	4,978,000	10,202,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(3,383,000)	(3,796,000)
Proceeds from sale of property and equipment	107,000	237,000
Cash paid for acquisitions	(5,981,000)	(14,659,000)
Net cash used in investing activities	(9,257,000)	(18,218,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings of debt	99,000	5,313,000
Repayments of debt	(136,000)	(5,328,000)
Contingent consideration payment		(448,000)
Distribution to noncontrolling interest	(235,000)	(153,000)
Options exercised	11,000	207,000
Purchase of treasury stock	(2,058,000)	(891,000)
Net cash used in financing activities	(2,319,000)	(1,300,000)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(6,598,000)	(9,316,000)
CASH, CASH EQUIVALENTS and RESTRICTED CASH, beginning of period	28,290,000	33,221,000
CASH, CASH EQUIVALENTS and RESTRICTED CASH, end of period	21,692,000	23,905,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest	1,227,000	1,108,000
Cash paid for income taxes	$ 2,313,000	$ 2,285,000