Contingent Liabilities (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of lawsuits against the company involving its products | item	3	4
Minimum limit of per claim for providing insurance coverage on annual basis | $	$ 5,000
Maximum limit of aggregate loss incurred annually for providing insurance coverage on annual basis | $	10,000
Total amount of damages claimed | $	100	$ 100
Total Product Liability Expense | $	$ 718	$ 1,514	$ 360
Number of new lawsuits | item	2	3
Number of settled lawsuits | item	2	1
Number of claims dismissed | item	1	0