Consolidated Statements of Changes in Shareholders' Equity (USD $)	Total USD ($)	Additional paid-in capital USD ($)	Retained earnings (deficit) USD ($)	Treasury stock USD ($)	Class A	Class A Common stock USD ($)	Class B	Class B Common stock USD ($)
Beginning Balance at Dec. 31, 2009	$ 264,322,000	$ 241,664,000	$ 22,761,000	$ (517,000)		$ 404,000		$ 10,000
Beginning Balance, shares at Dec. 31, 2009				68,000		40,443,000		1,031,000
Issuance of Class A common stock	20,652,000	20,633,000				19,000
Issuance of Class A common stock, shares						1,879,000
Cost to issue equity	(531,000)	(531,000)
Issuance of Class A common stock to Board member and advisors	198,000	198,000
Issuance of Class A common stock to Board member and advisors, shares						20,000
Stock options granted	414,000	414,000
Stock options exercised	1,978,000	1,974,000				4,000
Stock options exercised, shares						393,000
Stock options modified	1,086,000	1,086,000
Restricted stock issued, shares						15,000
Restricted stock vested	74,000	74,000
Class B dividends declared	(275,000)		(275,000)
Current period net loss	6,377,000		6,377,000
Issuance of treasury stock	47,000	2,000		45,000
Issuance of treasury stock, shares				(6,000)	(6,000)
Purchases of treasury stock	(10,293,000)			(10,293,000)
Purchases of treasury stock, shares				1,117,000
Ending Balance at Dec. 31, 2010	281,877,000	263,342,000	28,863,000	(10,765,000)		427,000		10,000
Ending Balance, shares at Dec. 31, 2010				1,179,000		42,750,000		1,031,000
Issuance of Class A common stock	592,000	591,000				1,000
Issuance of Class A common stock, shares						54,000
Cost to issue equity	(1,667,000)	(1,667,000)
Issuance of Class A common stock to Board member and advisors	230,000	230,000
Issuance of Class A common stock to Board member and advisors, shares						20,000
Stock options exercised	1,023,000	1,022,000				1,000
Stock options exercised, shares						93,000
Restricted stock vested	44,000	44,000
Class B dividends declared	(275,000)		(275,000)
Current period net loss	(10,309,000)		(10,309,000)
Ending Balance at Dec. 31, 2011	271,515,000	263,562,000	18,279,000	(10,765,000)		429,000		10,000
Ending Balance, shares at Dec. 31, 2011				1,179,000	41,737,493	42,917,000	1,030,700	1,031,000
Issuance of Class A common stock	146,510,000	146,388,000				122,000
Issuance of Class A common stock, shares						12,209,000
Cost to issue equity	(11,268,000)	(11,268,000)
Conversion of Class B common stock to Class A common stock						10,000		(10,000)
Conversion of Class B common stock to Class A common stock, shares						1,031,000		(1,031,000)
Issuance of Class A common stock to Board member and advisors	71,000	71,000
Issuance of Class A common stock to Board member and advisors, shares						7,000
Stock options expense related to equity based awards	432,000	432,000
Stock options exercised	3,544,000	3,541,000				3,000
Stock options exercised, shares	296,000					296,000
Liability based stock option awards forfeited or expired	(216,000)	(216,000)
Changes in fair value for liability based awards for which grant date fair value is in excess of fair value	620,000	620,000
Restricted stock issued		(4,000)				4,000
Restricted stock issued, shares						319,000
Restricted stock forfeited	(29,000)	(29,000)
Restricted stock forfeited, Shares				22,000
Restricted stock and restricted stock units expense	(758,000)	(758,000)
Swing sale profit contribution	24,000	24,000
Class B dividends declared	(28,000)		(28,000)
Current period net loss	(33,261,000)		(33,261,000)
Issuance of treasury stock, shares	(12,209,167)
Ending Balance at Dec. 31, 2012	$ 379,104,000	$ 404,311,000	$ (15,010,000)	$ (10,765,000)		$ 568,000
Ending Balance, shares at Dec. 31, 2012				1,201,000	55,577,667	56,779,000	0