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Acquisition (Details) - Lumo Energia Oyj [Member] $ in Thousands	Jan. 02, 2019 USD ($)
Business Acquisition [Line Items]
Cash	$ 1,539
Trade accounts receivable	2,520
Other current assets	411
Intangible assets:
Trademark (5-year useful life)	294
Non-compete agreements (3-year useful life)	34
Customer relationship (2-year useful life)	1,924
Goodwill	1,744
Other assets	95
Accounts and other current liabilities	(2,403)
Short-term debts	(2,260)
Other liabilities	(97)
Noncontrolling interest	(410)
Net assets	3,391
Supplemental information:
Cash paid to sellers	1,869
Cash contributed to Lumo	1,522
Total consideration	$ 3,391

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