Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (AOCI) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of revenues	$ (33,536)		$ (20,906)
Interest expense	(610)		(1,282)
Operating Expenses	(11,372)		(10,464)
Income from Continuing Operations before Income Tax	6,722		839
Income tax expense	(2,378)		312
Net Income	4,323		1,155
Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income	(312)	[1]	(664)	[1]
Reclassification out of Accumulated Other Comprehensive Loss | Gains (Losses) on Effective Cash Flow Hedge
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	(33)	[1]
Net Income	53	[1]
Reclassification out of Accumulated Other Comprehensive Loss | Gains (Losses) on Effective Cash Flow Hedge | Interest Rate Swap
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	86	[1]
Reclassification out of Accumulated Other Comprehensive Loss | Gains (Losses) on Defined Benefit Plan Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of revenues	(186)	[1]	(512)	[1]
Operating Expenses	(320)	[1]	(596)	[1]
Income from Continuing Operations before Income Tax	(506)	[1]	(1,108)	[1]
Income tax expense	$ 194	[1]	$ 444	[1]

[1] amounts in parenthesis represent a decrease to income