Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

Goodwill (Detail Textuals) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
Goodwill (Detail Textuals) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Goodwill [Line Items]
Impairment loss on goodwill	$ 95		$ 95
RAM
Goodwill [Line Items]
Impairment loss on goodwill		$ 0		$ 95