Note 12 - Cash Dividends (Tables)

6 Months Ended

Jun. 30, 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	142.5217	$	7.02	June 5, 2012
Series 2012 Notes	162.885	$	6.14	June 5, 2012
February 2015 Notes	162.885	$	6.14	June 8, 2012