Note 4 - Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	201 7		201 6		201 7		201 6
Numerator:
Numerator for basic and diluted earnings per share – Net income available to common shareholders	$	29,784	$	14,880	$	66,262	$	28,092
Denominator:
Denominator for basic earnings per share – weighted average shares outstanding		39,825		39,617		39,560		40,138
Effect of dilutive securities– Employee and director stock options and restricted share awards		1,321		657		1,270		560
Denominator for diluted earnings per share – adjusted weighted average shares outstanding and assumed conversions		41,146		40,274		40,830		40,698
Basic earnings per common share	$	.75	$	.38	$	1.68	$	.70
Diluted earnings per common share and common share equivalents	$	.72	$	.37	$	1.62	$	.69

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	201 7		201 6		201 7		201 6
Weighted average anti-dilutive options		406		2,287		599		2,444