Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	May 31, 2014	May 31, 2013
OPERATING ACTIVITIES
Net income	$ 41,364	$ 35,953
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on assumption of controlling interest in equity investee	(5,447)	0
Depreciation and amortization	45,561	39,500
Stock-based compensation	1,119	1,088
Amortization of financing costs	888	718
Deferred income taxes	(7,387)	1,876
Income from equity investments	(4,414)	(4,251)
Distribution from equity investee	4,988	4,825
Loss on asset retirements, non-cash	267	1,184
Other, net	118	(33)
Changes in operating assets and liabilities:
Receivables, net	(21,111)	(17,944)
Inventories, prepaid expenses and other assets	(8,129)	(8,530)
Accounts payable and other liabilities	(2,402)	296
Deferred income	45,887	41,085
Income taxes	14,124	5,819
Net cash provided by operating activities	105,426	101,586
INVESTING ACTIVITIES
Capital expenditures	(74,708)	(21,632)
Distribution from equity investee and affiliate	5,012	4,675
Equity investments and advances to affiliate	(946)	0
Proceeds from sale of Staten Island property	6,314	0
Cash included in assumption of ownership interest in equity investee	4,686	0
Other, net	248	111
Net cash used in investing activities	(59,394)	(16,846)
FINANCING ACTIVITIES
Payment of long-term debt	(353)	(334)
Exercise of Class A common stock options		51
Reacquisition of previously issued common stock	(323)	(259)
Net cash used in financing activities	(676)	(542)
Net increase in cash and cash equivalents	45,356	84,198
Cash and cash equivalents at beginning of period	172,827	78,379
Cash and cash equivalents at end of period	$ 218,183	$ 162,577