Property Held For Sale (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Activity of Property Held for Sale [Roll Forward]
Beginning balance	$ 21,470	$ 24,504	$ 25,567
Acquisitions	1,804	363	2,356
Real Estate Acquired Through Foreclosure Acquired through Merger Acquisition		2,377	23
Capitalized improvements	1,304	316	463
Dispositions	(2,370)	(5,205)	(3,237)
Valuation adjustments	(776)	(885)	(668)
Balance at year end	$ 21,432	$ 21,470	$ 24,504