Note 8 - Earnings Per Share (Details) - Reconciliation of Number of Shares Used in Computation of Basic and Diluted Earnings (Loss) Per Share In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reconciliation of Number of Shares Used in Computation of Basic and Diluted Earnings (Loss) Per Share [Abstract]
Weighted average number of shares used in computation of basic earnings per share	45,690	45,438	45,594	45,433
Additional shares from the assumed exercise of employee stock-based awards	412	56	323	21
Weighted average number of shares used in computation of diluted earnings per share	46,102	45,494	45,917	45,454