Description of Business (Details) - USD ($) $ in Thousands		1 Months Ended				12 Months Ended
	Jul. 03, 2018	Feb. 28, 2019	Feb. 24, 2019	Dec. 18, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Description of Business (Textual)
Issued and outstanding shares percenatge						50.07%
Ordinary shares for aggregate gross proceeds						$ 610	$ 2,121
Irrevocable proxy assigning his voting power			1,980,000
Voting interest of Micronet increased			39.53%
Share purchase agreement, description					As consideration for the sale of Enertec's entire share capital, Coolisys agreed to pay, at the closing of the transaction, a purchase price of $5,250 as well as assume up to $4,000 of Enertec debt.
Escrow deposit description						The Company received aggregate gross proceeds of approximately $4,700, of which 10% will be held in escrow for up to 14 months after the Closing to satisfy certain potential indemnification claims. Therefore, the Company has recorded such escrowed amount on its balance sheet as restricted cash and a liability. The final consideration amount was adjusted, pursuant to the terms of the Share Purchase Agreement, as a result of adjustments relating to certain Enertec debts at the Closing. In addition, Coolisys also assumed approximately $4,000 of Enertec’s debt. The Company’s capital gain from the sale of Enertec, based on the Company’s balance sheet at the closing date was $6,844.
Acquisitions description	The other counterparties have insisted that the Company modify the terms of the 1,187,500 Warrants to eliminate or modify certain provisions such that all of the Warrants are exchanged for new warrants (the “New Warrants”) which New Warrants shall be exercisable at $2 per share of New Public Company common stock (subject to adjustment as provided herein and therein) and shall expire on June 30, 2022. Subject to, and upon closing of the Acquisition Agreement, securities issued in connection with the payment of the Indebtedness owing to Yorkville, including but not limited to the amortization of such Indebtedness and the conversion of such Indebtedness into up to 1,000,000 shares of MICT Common Stock at a price of not less than $1.10 per share and up to 250,000 shares of MICT Common Stock at a price of not less than $1.0 per share.
Micronet Ltd [Member]
Description of Business (Textual)
Acquisitions description				(i) to each of MICT’s Board members, 300,000 options to purchase MICT common stock (1,200,000 options in the aggregate) with an exercise price equal to $1.65 which shall be granted as success bonuses under MICT’s existing Stock Incentive Plans or under the GFH Equity Plan (including the GFH Israeli Sub-Plan) and which shall be, converted into MICT Replacement Options (as described in Section 2.6(b) of the Acquisition Agreement) and which, for the, avoidance of doubt, and notwithstanding the termination of the employment or directorship of the, optionholder, shall expire on the 15 month anniversary of the closing date of the Acquisition Agreement); and (ii) up to an additional, 300,000 restricted shares of MICT ‘s common stock, to be issued to officers and service providers of MICT.
Micronet Ltd [Member] | Subsequent Event [Member]
Description of Business (Textual)
Sale of an aggregate shares of gross proceeds		1,400
Ordinary shares for aggregate gross proceeds		$ 11,500,000
Micronet Ltd [Member] | Subsequent Event [Member] | NIS [Member]
Description of Business (Textual)
Sale of an aggregate shares of gross proceeds		5,003
BVI Pubco [Member]
Description of Business (Textual)
Acquisitions description				Merger Sub will merge with and into the Company, as a result of which each outstanding share of the Company’s common stock and warrant to purchase the same shall be cancelled in exchange for the right of the holders thereof to receive 0.93 substantially equivalent securities of BVI Pubco, after which BVI Pubco will acquire (i) all of the issued and outstanding securities of BI China in exchange for newly issued ordinary shares of BVI Pubco and (ii) all of the issued and outstanding ordinary shares of ParagonEx for a combination of cash in the amount equal to approximately $25 million (the majority of which was raised in a private placement by BVI Pubco), unsecured promissory notes and newly issued ordinary shares of BVI Pubco, or collectively, the Acquisitions.
Maximum [Member]
Description of Business (Textual)
Ownership interest in Micronet, diluted			49.89%
Minimum [Member]
Description of Business (Textual)
Ownership interest in Micronet, diluted			33.88%