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		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of basic weighted-average shares outstanding to diluted weighted-average shares outstanding [Abstract]
Weighted-average shares outstanding - basic	57,713	57,155	57,600	57,151
Common stock equivalents attributable to stock options and restricted stock	365	132	307	58
Weighted-average shares outstanding - diluted	58,078	57,287	57,907	57,209