Note 17 - Net Earnings (Loss) Per Common Share (Tables) (Denominator [Member])

12 Months Ended

Dec. 31, 2014

Denominator [Member]

Note 17 - Net Earnings (Loss) Per Common Share (Tables) [Line Items]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	2014			2013			2012
Shares issued and outstanding at beginning of period		35,801,732			30,070,104			29,941,254
Weighted average number of shares:
Issued during the period		335,253			2,968,064			250,868
Repurchased during the period		(220,333	)		(110,455	)		(165,703	)
Weighted average number of shares used in computing basic earnings per share		35,916,652			32,927,713			30,026,419
Assumed exercise of stock options, net of shares assumed acquired under the Treasury Stock Method		392,326			334,586			349,531
Number of shares used in computing diluted earningsper share		36,308,978			33,262,299			30,375,950