Stockholders' Equity (Categories of Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	$ (15,940)
Other comprehensive income (loss)	(141,759)	$ 10,327
Other comprehensive income, Ending Balance	(157,699)
Comprehensive income (loss)	(74,609)	109,141
Unrealized Gains on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	2,859	63,799
Other comprehensive income (loss)	(176,958)	(25,440)
Other comprehensive income, Ending Balance	(174,099)	38,359
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	(18,799)	(112,951)
Other comprehensive income (loss)	35,199	35,767
Other comprehensive income, Ending Balance	16,400	(77,184)
Comprehensive income (loss)	35,199	35,767
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	12,196	12,243
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	47,395	48,010
OCI, before Reclassifications, Net of Tax, Attributable to Parent	31,179	24,611
Other Comprehensive Income (Loss), before Reclassifications, before Tax	41,963	33,035
Other Comprehensive Income (Loss) before Reclassifications, Tax	10,784	8,424
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	(15,940)	(49,152)
Other comprehensive income (loss)	(141,759)	10,327
Other comprehensive income, Ending Balance	(157,699)	(38,825)
Comprehensive income (loss)	$ (141,759)	$ 10,327