Note 1 - Nature of Business, Significant Accounting Policies and Recent Accounting Guidance (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	33,612	33,277	33,566	31,934
Effect of dilutive securities
Weighted-average shares outstanding - diluted	33,612	33,277	33,566	31,934