Consolidated Statements Of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 58,510,000	$ 51,550,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,610,000	4,695,000
Gain on sale of assets	(2,849,000)	0
Provision for bad debts, net	1,383,000	1,753,000
Non-cash stock compensation and other charges	4,711,000	5,566,000
Non-cash interest and other (income) loss	719,000	967,000
Deferred income taxes	(9,273,000)	8,236,000
Dividends received from equity method investments	546,000	535,000
Equity in net loss of affiliates	65,000	81,000
Receivables	(39,518,000)	(40,349,000)
Advances to/from marketing and reservation activities, net	31,522,000	5,631,000
Forgivable notes receivable, net	(6,692,000)	(3,595,000)
Accounts payable	8,316,000	9,893,000
Accrued expenses	(5,247,000)	(18,463,000)
Income taxes payable/receivable	15,198,000	1,198,000
Deferred revenue	6,231,000	(3,318,000)
Other assets	(1,102,000)	(1,664,000)
Other liabilities	(1,298,000)	7,271,000
Net cash provided by operating activities	65,832,000	29,987,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in property and equipment	(7,314,000)	(22,035,000)
Proceeds from sales of assets	12,216,000	0
Equity method investments	(6,946,000)	(1,851,000)
Purchases of investments, employee benefit plans	(1,220,000)	(1,580,000)
Proceeds from sales of investments, employee benefit plans	641,000	3,934,000
Issuance of mezzanine and other notes receivable	(2,223,000)	0
Collections of mezzanine and other notes receivable	9,743,000	201,000
Other items, net	(296,000)	(304,000)
Net cash provided (used) in investing activities	4,601,000	(21,635,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings pursuant to revolving credit facility	0	15,200,000
Principal payments on long-term debt	(4,112,000)	(4,095,000)
Proceeds from the issuance of long-term debt	26,000	0
Purchases of treasury stock	(4,544,000)	(3,651,000)
Dividends paid	(21,957,000)	(11,261,000)
Excess tax benefits from stock-based compensation	1,319,000	1,146,000
Proceeds from exercise of stock options	1,547,000	5,973,000
Net cash provided (used) by financing activities	(27,721,000)	3,312,000
Net change in cash and cash equivalents	42,712,000	11,664,000
Effect of foreign exchange rate changes on cash and cash equivalents	1,035,000	(2,051,000)
Cash and cash equivalents at beginning of period	167,795,000	134,177,000
Cash and cash equivalents at end of period	211,542,000	143,790,000
Cash payments during the period for:
Income taxes, net of refunds	19,594,000	11,652,000
Interest	20,595,000	22,033,000
Non-cash investing and financing activities:
Dividends declared but not paid	10,810,000	10,766,000
Issuance of stock	8,024,000	9,395,000
Investment in property and equipment acquired in accounts payable	688,000	6,096,000
Performance Vested Restricted Stock Units [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid	$ (400,000)