Intangible Assets (Activity for Capitalized MSRs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Capitalized MSRs [Roll Forward]
Balance at beginning of period	$ 38,104
Amortization	(2,169)	$ (1,825)
Balance at end of period	36,266	31,655
Mortgage servicing rights [Member]
Capitalized MSRs [Roll Forward]
Balance at beginning of period	11,122	12,217
Additions	331	400
Amortization	(975)	(1,034)
Balance at end of period	$ 10,478	$ 11,583