Goodwill and Intangible Assets, Net (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 1,989,000		$ 1,989,000		$ 1,989,000
Impairment loss	699,000		699,000
Customer Relationships [Member] | WPS [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets - initial value	987,000		987,000
Trade Names [Member] | WPS [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets - initial value	$ 70,000		$ 70,000