Note 5 - Share-Based Compensation (Details) - Non-vested stock (USD $)	Sep. 30, 2013	Dec. 31, 2012
Common Class A [Member]
Note 5 - Share-Based Compensation (Details) - Non-vested stock [Line Items]
Outstanding at December 31, 2012	60,609	60,609
Outstanding at December 31, 2012 (in Dollars per share)	$ 5.77	$ 5.77
Outstanding at September 30, 2013	60,609	60,609
Outstanding at September 30, 2013 (in Dollars per share)	$ 5.77	$ 5.77
Common Class B [Member]
Note 5 - Share-Based Compensation (Details) - Non-vested stock [Line Items]
Outstanding at December 31, 2012	10,101	10,101
Outstanding at December 31, 2012 (in Dollars per share)	$ 34.65	$ 34.65
Outstanding at September 30, 2013	10,101	10,101
Outstanding at September 30, 2013 (in Dollars per share)	$ 34.65	$ 34.65