Discontinued Operation (Details Textual) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($)
Discontinued Operation (Textual)
Purchase price	$ 5,250
Enertec debt	4,000
Aggregate gross proceeds	$ 4,700
Percentage of held in escrow	10.00%
Capital gain from sale of enertec	$ 6,844
Coolisys [Member]
Discontinued Operation (Textual)
Enertec debt	$ 4,000

The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

Name:	us-gaap_ProceedsFromRelatedPartyDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration