Quarterly Data (unaudited) (Tables)

12 Months Ended

Sep. 30, 2013

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Information

The following quarterly information includes all adjustments (consisting only of normal recurring adjustments) which we consider necessary for a fair presentation of such information. Quarterly results fluctuate because of the seasonal nature of the Company’s businesses.

	December 31,				March 31,				June 30,				September 30,
	2012		2011		2013		2012		2013		2012		2013		2012
Revenues	$	273,797	$	280,641	$	395,901	$	345,802	$	148,798	$	143,644	$	122,216	$	114,246
Operating income	$	72,564	$	64,605	$	109,230	$	88,447	$	18,878	$	25,300	$	9,647	$	7,031
Net income (loss)	$	36,812	$	32,668	$	58,259	$	47,871	$	5,373	$	8,460	$	1,654	$	(1,101	)