Note 4 - Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Notes Tables

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Numerator:
Numerator for basic and diluted earnings per share –
Net income available to common shareholders	$	19,576	$	19,838	$	36,357	$	31,852
Denominator–
Denominator for basic earnings per share – weighted average shares outstanding		40,275		39,751		40,171		39,544
Effect of dilutive securities–
Employee and director stock options and restricted share awards		797		1,098		858		1,138
Denominator for diluted earnings per share – adjusted weighted average shares outstanding and assumed conversions		41,072		40,849		41,029		40,682
Basic earnings per common share	$	.49	$	.50	$	.91	$	.81
Diluted earnings per common share and common share equivalents	$	.48	$	.49	$	.89	$	.78

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Options		1,234		721		1,045		576
Total anti-dilutive securities		1,234		721		1,045		576