Accrued Expenses And Other Current Liabilities (Schedule Of Accrued Expenses And Other Current Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Employee compensation and benefits	$ 20,585	$ 15,914
Dividend payable	2,727	2,697
Other	3,903	3,063
Accrued expenses and other current liabilities	32,276	27,670
Scarborough [Member]
Royalties due to Scarborough	$ 5,061	$ 5,996