Business Acquisitions (Pro Forma Results of Operations) (Detail) (TGT [Member], USD $)	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	May 31, 2013
TGT [Member]
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Purchase Price, Total			$ 83,300,000
Revenue	469,980,000	464,364,000
Net income (loss)	$ (55,413,000)	$ (25,669,000)
Net income (loss) per share (in dollars per share)	$ (0.18)	$ (0.08)