Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net Income	$ 19,603	$ 16,476
Other comprehensive income:
Change in fair value of available-for-sale securities	5,897	26,000
Reclassification adjustment for gain on sale of investments, net included in statement of income	(1,391)	0
Change in fair value of cash flow hedges	437	(3,087)
Reclassification adjustment for cash flows hedges included in statement of income	4,103	3,266
Other comprehensive income	9,046	26,179
Total comprehensive income	28,649	42,655
Preferred Stock Dividends	(1,222)	0
Comprehensive Income to Common Shareholders	$ 27,427	$ 42,655