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, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reconciliation of Basic Weighted-average Shares Outstanding to Diluted Weighted-average Shares Outstanding [Abstract]
Weighted-average shares outstanding-basic	57,862	57,561	57,855	57,542
Common stock equivalents for stock options and restricted stock	449	378	443	278
Weighted-average shares outstanding-diluted	58,311	57,939	58,298	57,820