Detail of Certain Balance Sheet Accounts (Tables)

12 Months Ended

Sep. 30, 2012

Detail Of Certain Balance Sheet Accounts [Abstract]

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

	Years Ended September 30,
	2012		2011
Balance at beginning of period	$	2,704	$	7,429
Additions to costs and expenses		771		1,071
Deductions for uncollectible receivables written off, net of recoveries		(1,687)		(5,796)
Balance at end of period	$	1,788	$	2,704

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

	Years Ended September 30,
	2012		2011
Accounts payable, trade	$	39,879	$	49,556
Accrued compensation and benefits		13,312		11,662
Accrued insurance liabilities		5,229		7,040
Other accrued expenses		10,253		10,722
	$	68,673	$	78,980

Contracts In Progresstable [Text Block]

	Years Ended September 30,
	2012		2011
Costs incurred on contracts in progress	$	402,738	$	335,204
Estimated earnings		33,931		21,942
		436,669		357,146
Less--Billings to date		(453,744)		(366,768)
Net contracts in progress	$	(17,075)	$	(9,622)
Costs and estimated earnings in excess of billings on uncompleted contracts		8,180		9,963
Less--Billings in excess of costs and estimated earnings on uncompleted contracts		(25,255)		(19,585)
Net contracts in progress	$	(17,075)	$	(9,622)

Schedule of Other Assets, Noncurrent [Table Text Block]

	Years Ended September 30,
	2012		2011
Deposits	$	2,137	$	3,986
Deferred tax assets		1,065		1,040
Executive Savings Plan assets		533		477
Securities and equity investments		919		1,003
Other		1,489		581
Total	$	6,143	$	7,087

Schedule of Cost Method Investments [Table Text Block]

	Years Ended September 30,
	2012		2011
Carrying value	$	919	$	1,003
Unrealized gains		69		-
Fair value	$	988	$	1,003