Quarterly Results (Tables)

12 Months Ended

Dec. 31, 2011

Quarterly Results [Abstract]

Summarized Quarterly Results Of Operations

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Year Ended December 31, 2011
Interest income	$	53,254		$	63,194		$	62,949		$	63,981
Interest expense		(14,513	)		(15,894	)		(17,930	)		(17,743	)
		38,741			47,300			45,019			46,238
Other revenue (expense)		(4,114	)		(4,824	)		(4,080	)		(4,335	)
Equity in earnings of unconsolidated affiliates		65			65			64			65
Net income	$	34,692		$	42,541		$	41,003		$	41,968
Basic and diluted net income per common share	$	0.41		$	0.48		$	0.43		$	0.43
Year Ended December 31, 2010
Interest income	$	60,242		$	47,769		$	40,725		$	51,042
Interest expense		(15,555	)		(13,333	)		(13,282	)		(14,081	)
		44,687			34,436			27,443			36,961
Other revenue (expense)		(4,315	)		(4,742	)		(3,834	)		(3,999	)
Equity in earnings of unconsolidated affiliates		65			65			64			65
Net income	$	40,437		$	29,759		$	23,673		$	33,027
Basic and diluted net income per common share	$	0.51		$	0.35		$	0.27		$	0.40