Note 5 - Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

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

	Three months ended June 30,				Six months ended June 30,
	2014		2013		2014		2013
Shares used in the calculation of basic earnings per share		14,687,747		13,510,573		14,559,917		13,459,049
Effect of dilutive securities:
Stock options, SARs, and RSAs		804,985		1,068,354		927,515		1,025,929
Diluted shares used in the calculation of earnings per share		15,492,732		14,578,927		15,487,432		14,484,978