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Intangible Assets (Schedule of net intangible assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Original cost	$ 3,539	$ 2,052
Accumulated amortization	2,369	334
Intangible assets, Net	1,170	1,718
Amortization expense	378	266	$ 1,103
Impairment charge	1,657
Capitalization of software development costs [Member]
Finite-Lived Intangible Assets [Line Items]
Original cost	2,983	1,946
Accumulated amortization	2,163	274
Intangible assets, Net	$ 820	1,672
Useful life	3 years
Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Original cost	$ 556	106
Accumulated amortization	206	60
Intangible assets, Net	$ 350	$ 46
Useful life	3 years

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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