Note 4 - Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

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

	Three Months Ended March 31,
	2018		2017
Numerator:
Numerator for basic and diluted earnings per share – Net income available to common shareholders	$	21,039	$	14,479
Denominator–
Denominator for basic earnings per share – weighted average shares outstanding		39,665		39,409
Effect of dilutive securities– Employee stock options and restricted stock awards		1,427		1,292
Denominator for basic earnings per share – adjusted weighted average shares outstanding and assumed conversions shares outstanding		41,092		40,701
Basic earnings per common share	$	.53	$	.37
Diluted earnings per common share and common share equivalents	$	.51	$	.36

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	March 31, 2018		March 31, 2017
Anti-dilutive options – weighted average		87		729