Note 11 - Cash Dividends (Tables)

3 Months Ended

Mar. 31, 2012

Schedule of Conversion Rates for Convertible Notes [Table Text Block]

Convertible Notes	Conversion Rate per $1,000 Principal Amount	Approximate Conversion Price Per Common Share		Effective Date
May 2015 Notes	139.2165	$	7.18	March 5, 2012
Series 2012 Notes	159.098	$	6.29	March 5, 2012
February 2015 Notes	159.098	$	6.29	March 8, 2012