21. Other liabilities (Details Narrative) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Unpaid acquisition payable	$ 53,824	$ 53,655
Other current liabilities	8,819	8,744
Accrued warranty reserve	1,538	1,538
Sinsin [Member]
Unpaid acquisition payable	53,824	53,655
Sinsin [Member] \| Accrued interest [Member]
Unpaid acquisition payable	8,712	6,314
Heliostixio [Member] \| Unpaid Purchase Consideration [Member]
Unpaid acquisition payable	1,517	1,592
Sinsin Renewable Investment Ltd [Member]
Other current liabilities	$ 8,819	$ 8,744

Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14394-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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