Note 4 - Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

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,
	2013		2012		2013		2012
Numerator:
Numerator for basic and diluted earnings per share – Net income available to common shareholders	$	5,632	$	17,422	$	19,179	$	33,328
Denominator– Denominator for basic earnings per share – weighted average shares outstanding		39,552		38,675		39,337		38,531
Effect of dilutive securities– Employee and director stock options and restricted share awards		1,029		869		1,109		1,074
Denominator for diluted earnings per share – adjusted weighted average shares outstanding and assumed conversions		40,581		39,544		40,446		39,605
Basic earnings per common share	$	.14	$	.45	$	.49	$	.86
Diluted earnings per common share and common share equivalents	$	.14	$	.44	$	.47	$	.84

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Options		924,158		1,373,860		924,158		1,126,795
Total anti-dilutive securities		924,158		1,373,860		924,158		1,126,795