Condensed Consolidated Statement Of Stockholders' Equity (USD $) In Thousands	Common Stock Class A [Member]	Common Stock Class B [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income Currency Translation [Member]	Accumulated Other Comprehensive Income Hedging Derivatives [Member]	Total
Balance at Dec. 31, 2011	$ 24	$ 100	$ 55,125	$ 17,967	$ 11,490	$ 4	$ 84,710
Net income				1,523			1,523
Other comprehensive income, net					571	294	865
Cash dividends				(1,548)			(1,548)
Balance at Mar. 31, 2012	$ 24	$ 100	$ 55,125	$ 17,942	$ 12,061	$ 298	$ 85,550