Note 9. Stockholders' Equity (Details) - Statement of Stockholders’ Equity (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended					9 Months Ended
	Sep. 30, 2013	Sep. 23, 2012	Sep. 30, 2013	Sep. 23, 2012	Sep. 30, 2013 Common Stock [Member] Common Class A [Member]	Sep. 30, 2013 Common Stock [Member] Common Class B [Member]	Dec. 31, 2012 Common Stock [Member] Common Class B [Member]	Sep. 30, 2013 Additional Paid-in Capital [Member]	Sep. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Sep. 30, 2013 Retained Earnings [Member]
Note 9. Stockholders' Equity (Details) - Statement of Stockholders’ Equity [Line Items]
Balance at December 31, 2012 (in Shares)					27,215,117
Balance at December 31, 2012			$ (176,224)		$ 136,076	$ 2,743	$ 2,743	$ 23,024	$ (219,656)	$ (118,411)
Net loss	(14,616)	(30,333)	(48,457)	(211,053)						(48,457)
Other comprehensive income, net of taxes	1,200		3,772						3,772
Exercise of stock options (in Shares)					432,112
Exercise of stock options			2,163		2,161			2
Performance accelerated restricted stock (in Shares)					(42,143)
Performance accelerated restricted stock			(181)		(211)			30
Stock-based compensation			723					723
Other (in Shares)					149
Other			1,015					1,015
Balance at September 30, 2013 (in Shares)					27,605,235
Balance at September 30, 2013	$ (217,189)		$ (217,189)		$ 138,026	$ 2,743	$ 2,743	$ 24,794	$ (215,884)	$ (166,868)