NET INCOME PER COMMON SHARE (Tables)

12 Months Ended

Dec. 31, 2012

Components Of Computation Of Basic And Diluted Net Income Per Common Share

Components of the computation of basic and diluted net income per common share were as follows (dollars in thousands, except per share amounts):

	Year Ended December 31
	2012			2011			2010
Basic net income per common share
Numerator for basic net income per common share:
Net income	$	163,626		$	160,204		$	126,896
Series A and B preferred share dividends		(21,021	)		(20,369	)		(20,233	)
Unvested stock award participation in earnings		(372	)		(579	)		(594	)
	$	142,233		$	139,256		$	106,069
Denominator for basic net income per common share:
Weighted average common shares outstanding		95,115			79,784			69,948
Average unvested stock awards outstanding		(522	)		(468	)		(396	)
		94,593			79,316			69,552
	$	1.50		$	1.76		$	1.53
Diluted net income per common share
Numerator for diluted net income per common share:
Net income	$	163,626		$	160,204		$	126,896
Dividends on antidilutive convertible preferred shares		(20,723	)		(20,071	)		(19,932	)
Unvested stock award participation in earnings		(372	)		(579	)		(594	)
	$	142,531		$	139,554		$	106,370
Denominator for diluted net income per common share:
Weighted average common shares outstanding		95,115			79,784			69,948
Average unvested stock awards outstanding		(522	)		(468	)		(396	)
Net effect of dilutive stock and option awards		111			71			39
Net effect of dilutive convertible preferred shares		308			309			310
		95,012			79,696			69,901
	$	1.50		$	1.75		$	1.52

Potentially Dilutive Securities Excluded From Computation Of Net Income Per Common Share

Potentially dilutive securities excluded from the computation of net income per share because the effect of inclusion was antidilutive during the indicated periods were as follows (in thousands):

	Year Ended December 31
	2012		2011		2010
Antidilutive convertible preferred shares		16,493		16,184		15,819
Antidilutive equity awards excludable under the treasury stock method:
Shares issuable under option awards		10		40		40
Unvested stock awards		—		—		240