Note 1 - Basis of Presentation (Details) - Reconciliation of basic weighted-average shares outstanding to diluted weighted-average shares outstanding In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Reconciliation of basic weighted-average shares outstanding to diluted weighted-average shares outstanding [Abstract]
Weighted-average shares outstanding-basic	57,561	57,151	57,542	57,149
Common stock equivalents for stock options and restricted stock	378	39	278	20
Weighted-average shares outstanding-diluted	57,939	57,190	57,820	57,169