Consolidated Statements 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, 2008	$ 24	$ 100	$ 54,873	$ 27,798	$ 8,356	$ 126	$ 91,277
Net income (loss)				(1,993)			(1,993)
Other comprehensive income (loss)					1,998	(126)	1,872
Cash dividends				(6,184)			(6,184)
Issuance of common stock and other, net			55				55
Balance at Dec. 31, 2009	24	100	54,928	19,621	10,354		85,027
Net income (loss)				3,052			3,052
Other comprehensive income (loss)					1,949		1,949
Cash dividends				(6,187)			(6,187)
Issuance of common stock and other, net			54				54
Balance at Dec. 31, 2010	24	100	54,982	16,486	12,303		83,895
Net income (loss)				7,673			7,673
Other comprehensive income (loss)					(813)	4	(809)
Cash dividends				(6,192)			(6,192)
Issuance of common stock and other, net			143				143
Balance at Dec. 31, 2011	$ 24	$ 100	$ 55,125	$ 17,967	$ 11,490	$ 4	$ 84,710