Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended
	Dec. 14, 2016	Mar. 31, 2017	Dec. 31, 2016
Loss Contingency, Information about Litigation Matters [Abstract]
Loan commitments		$ 421.9	$ 429.4
Letters of credit		6.2	7.2
Loan Balance of Swap Commitment		$ 14.5
Loss Contingency, Lawsuit Filing Date		March 18, 2011
Interest rate swap agreement Notional amount		$ 51.1	$ 34.7
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	7,250,000
Payments to Acquire Businesses, Gross	$ 95.0