Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 15,523	$ 19,997
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,175	2,017
Provision for bad debts, net	844	679
Non-cash stock compensation and other charges	2,549	2,543
Non-cash interest and other (income) loss	(76)	1,593
Deferred income taxes	(446)	30
Dividends received from equity method investments	146	0
Equity in net loss of affiliates	141	55
Changes in assets and liabilities:
Receivables	(3,531)	(870)
Receivable - marketing and reservation fees, net	(4,101)	(6,187)
Accounts payable	10,471	6,712
Accrued expenses	(31,145)	(25,342)
Income taxes payable/receivable	4,367	8,180
Deferred revenue	5,160	1,997
Other assets	(3,869)	(2,611)
Other liabilities	(2,622)	1,135
Net cash provided by operating activities	1,874	4,412
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in property and equipment	(13,645)	(3,129)
Equity method investments	(1,000)	(2,600)
Issuance of notes receivable	(1,729)	(3,719)
Collections of notes receivable	19	151
Purchases of investments, employee benefit plans	(1,242)	(743)
Proceeds from sales of investments, employee benefit plans	3,882	8,652
Other items, net	(101)	(108)
Net cash used in investing activities	(13,816)	(1,496)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings pursuant to revolving credit facilities	18,000	5,900
Principal payments on long-term debt	(2,046)	(166)
Purchase of treasury stock	(3,634)	(14,854)
Dividends paid	(503)	(10,713)
Excess tax benefits from stock-based compensation	952	422
Proceeds from exercise of stock options	5,367	389
Net cash provided by (used) in financing activities	18,136	(19,022)
Net change in cash and cash equivalents	6,194	(16,106)
Effect of foreign exchange rate changes on cash and cash equivalents	(146)	361
Cash and cash equivalents at beginning of period	134,177	107,057
Cash and cash equivalents at end of period	140,225	91,312
Cash payments during the period for:
Income taxes, net of refunds	1,029	1,746
Interest	20,400	7,388
Non-cash investing and financing activities:
Dividends declared but not paid	10,759	10,690
Issuance of restricted shares of common stock	7,151	8,497
Issuance of performance vested restricted stock units	1,298	0
Investment in property and equipment	$ 10,356	$ 0