CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 19,043	$ (85,391)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	58,311	28,002
Loss on disposal of assets	609	309
Loss from equity method investments	0	92,181
Impairment of buildings, vessels and equipment	4,708	151
Amortization of debt issuance costs and debt discounts	4,766	1,666
Share-based compensation expense	3,125	1,944
Changes in operating assets and liabilities:
Receivables, net	6,208	242
Prepaid expenses and other	(15,941)	2,315
Accounts payable, accrued expenses and other	(5,118)	(32)
Net cash provided by operating activities	75,711	41,387
Cash flows from investing activities:
Capital expenditures	(67,300)	(39,031)
Equity method investments, inclusive of capitalized interest	(25)	0
Purchase of held-to-maturity debt securities	0	(5,853)
Proceeds from matured investments	0	4,428
Proceeds from sale of property and equipment	0	202
Purchase of intangible assets	(10,000)	0
Proceeds from non-refundable deposit	0	1,300
Loans receivable, net	1,675	(4,586)
Refund of restricted cash	5,925	0
Net cash used in investing activities	(69,725)	(43,540)
Cash flows from financing activities:
Proceeds from Credit Facility	53,000	0
Repayments under Credit Facility	(86,000)	0
Repayments of long-term debt	0	(813)
Proceeds from common stock options exercised, net	2,277	962
Distribution to non-controlling interest minority owner	0	(911)
Debt issuance and other financing costs	(122)	0
Net cash used in financing activities	(30,845)	(762)
Change in cash and cash equivalents	(24,859)	(2,915)
Cash and cash equivalents at the beginning of the period	198,575	101,792
Cash and cash equivalents at the end of the period	173,716	98,877
Supplemental cash flow information:
Cash paid for interest, net of amounts capitalized	41,812	22,720
Cash payments (refund) related to income taxes, net	(1,621)	84
Increase in construction-related deposits and liabilities	$ 6,196	$ 7,273