Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Components of basic and diluted earnings per common share

Basic and diluted earnings per common share are as follows (in thousands, except per share data):

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Net income - Basic	$	8,968	$	9,806	$	25,173	$	26,590
Impact of assumed conversions:
Interest on convertible notes	—		414		—		—
Net income - Diluted	$	8,968	$	10,220	$	25,173	$	26,590
Weighted average common shares outstanding - Basic	52,742		48,384		50,819		48,054
Assumed conversions:
Incremental common shares from warrants	1,365		1,493		1,404		1,617
Incremental common shares from stock options	1,134		1,003		1,143		986
Incremental common shares from restricted stock units	76		158		41		80
Incremental common shares from convertible senior notes	—		2,440		—		—
Weighted average common shares outstanding - Diluted	55,317		53,478		53,407		50,737
Basic earnings per common share	$	0.17	$	0.20	$	0.50	$	0.55
Diluted earnings per common share	$	0.16	$	0.19	$	0.47	$	0.52