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Summarized Financial Information for Equity Method Investments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Equity Method Investments And Joint Ventures [Abstract]
Current assets	$ 58,550		$ 1,486
Noncurrent assets	411,159		1,812
Current liabilities	77,188		3,300
Noncurrent liabilities	166,898		2,191
Equity of equity method investments	225,623		$ (2,193)
Revenue	33,896	$ 2,422
Net loss	$ (20,256)	$ (484)

The amount of current liabilities reported by an equity method investment of the entity.

The amount of net income (loss) reported by an equity method investment of the entity.

The amount of noncurrent assets reported by an equity method investment of the entity.

The amount of noncurrent liabilities reported by an equity method investment of the entity.