Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Treasury stock, shares	1,058,316	1,058,316
Common Stock Series A Voting
Common stock, par value (in dollars per share)	0.001	0.001
Common stock, authorized shares	39,000,000	39,000,000
Common stock, issued shares	25,436,467	25,436,467
Common stock, outstanding shares	24,378,151	24,378,151
Common Stock Series B Non-voting
Common stock, par value (in dollars per share)	0.001	0.001
Common stock, authorized shares	3,000,000	3,000,000
Common stock, issued shares	2,063,533	2,063,533
Common stock, outstanding shares	2,063,533	2,063,533