Fair Value Of Financial Instruments (Assets Measured At Fair Value On A Recurring Basis) (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	$ 0		$ 747
Interest Rate Cash Flow Hedge Liability at Fair Value			$ 159
Interest Rate Swap, Date Entered, May 2012 [Member]
Interest Rate Cash Flow Hedge Liability at Fair Value		$ 1,297

Fair value of all liability derivatives designated as cash flow hedging instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant