Business Description And Significant Accounting Policies (Details 2) - USD ($)	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ 23,071,000		$ 22,264,000
Accumulated other comprehensive loss	(1,406,000)		(1,690,000)		$ (1,409,000)
Right-of-use asset	2,111,000		$ 0
ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings				$ 44,000
Accumulated other comprehensive loss				44,000
ASU 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ (33,000)
Right-of-use asset		$ 2,600,000
Lease liability		$ 3,200,000
Effect of adoption of Topic 606 [Member] | ASU 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings				$ 218,000