Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

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 June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Net income attributable to common stockholders - Basic	$	13,178	$	2,126	$	16,784	$	7,632
Impact of assumed conversions:
Interest on convertible notes		570		—		—		—
Dividends on preferred stock		—		—		—		140
Net income attributable to common stockholders - Diluted	$	13,748	$	2,126	$	16,784	$	7,772
Weighted average common shares outstanding - Basic		48,227		44,749		47,890		41,180
Assumed conversions:
Incremental common shares from warrants		1,657		1,900		1,678		2,724
Incremental common shares from stock options		983		784		977		743
Incremental common shares from convertible preferred stock before conversion		—		—		—		876
Incremental common shares from restricted stock units		73		—		41		—
Incremental common shares from convertible senior notes		3,092		—		—		—
Weighted average common shares outstanding - Diluted		54,032		47,433		50,586		45,523
Basic earnings per common share	$	0.27	$	0.05	$	0.35	$	0.19
Diluted earnings per common share	$	0.25	$	0.04	$	0.33	$	0.17