Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Weighted Average Number of Shares [Table Text Block]

	Years ended December 31,
	2012		2011		2010
Weighted average shares outstanding – basic		117,572		119,158		124,712
Effect of common stock equivalents		2,450		2,764		3,055
Weighted average shares outstanding – diluted		120,022		121,922		127,767