Detail of Certain Balance Sheet Accounts (Tables)

12 Months Ended

Sep. 30, 2014

Detail Of Certain Balance Sheet Accounts [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	Years Ended September 30,
	2014		2013
Balance at beginning of period	$	980	$	1,788
Additions to costs and expenses		170		133
Deductions for uncollectible receivables written off, net of recoveries		(370)		(941)
Balance at end of period	$	780	$	980

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	Years Ended September 30,
	2014		2013
Accounts payable, trade	$	38,639	$	40,659
Accrued compensation and benefits		22,076		18,057
Accrued insurance liabilities		4,560		4,963
Other accrued expenses		8,757		10,641
	$	74,032	$	74,320

Contracts In Progresstable [Text Block]

	Years Ended September 30,
	2014		2013
Costs incurred on contracts in progress	$	281,764	$	362,822
Estimated earnings		32,088		42,464
		313,852		405,286
Less--Billings to date		(327,113)		(417,626)
Net contracts in progress	$	(13,261)	$	(12,340)
Costs and estimated earnings in excess of billings on uncompleted contracts		8,591		8,336
Less--Billings in excess of costs and estimated earnings on uncompleted contracts		(21,852)		(20,676)
Net contracts in progress	$	(13,261)	$	(12,340)

Schedule of Other Assets, Noncurrent [Table Text Block]

	Years Ended September 30,
	2014		2013
Deposits	$	250	$	999
Deferred tax assets		298		1,631
Executive Savings Plan assets		625		591
Securities and equity investments		919		919
Other		2,375		2,611
Total	$	4,467	$	6,751

Schedule of Cost Method Investments [Table Text Block]

	Years Ended September 30,
	2014		2013
Carrying value	$	919	$	919
Unrealized gains		94		138
Fair value	$	1,013	$	1,057