Commitments and Contingencies	6 Months Ended
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 9. Commitments and Contingencies Operating commitments On December 7, 2017 and January 9, 2018, the Company entered into agreements with Beacon whereby Beacon agreed to provide hosting services to the Company for purposes of its mining operations and provide 15 megawatts of uninterrupted power in Sweden. The agreement is for a term of 24 months for a fee of $810 per month. The Company prepaid the first and last month of service in the amount of $1,620. As described in Note 1, Beacon did not meet its obligations under the agreement with the Company. On May 16, 2018, the Company notified Beacon that it was in breach of the agreement, demanding reimbursement of the Company’s prepayment and notifying Beacon that it would not be paying the monthly fee due under the agreement. Beacon has not responded to the Company’s notification and the Company is currently exploring its potential remedies against Beacon. On June 30, 2018, the Company wrote off the un-recognized portion of its prepayment in the amount of $1,350 to restructuring charge on the Company’s unaudited condensed consolidated statements of operations and consolidated loss. Management agreements On October 12, 2017, MGT entered into two management agreements with two accredited investors, Deep South Mining LLC and BDLM, LLC. On November 21, 2017, the Company entered into a third management agreement with another accredited investor, Buckhead Crypto, LLC (“Buckhead Crypto”) (all three accredited investors together are “Users”, each agreement a “Management Agreement”, and all three agreements together are “Management Agreements”). Each of the Users agreed on substantially similar terms to purchase an aggregate of 2,376 Bitmain Antminer S9 mining computers (the “Bitcoin Hardware”) for a total of $3,650 to mine Bitcoin with the Company acting as the exclusive manager for each of the Users. In addition, the Users have agreed to pay to the Company, in advance, the first three months of expected electricity costs of the Bitcoin mining operations in the sum of $691, which is included in Other Payables on the Company’s consolidated balance sheet as of December 31, 2017. Initial electricity cost for the first three months following delivery of the Bitcoin Hardware shall be reimbursed to the Users within the first three months of operation. Each Management Agreement is in effect for 24 months from the date that the Bitcoin Hardware begins mining operations, and may be terminated by mutual written agreement. Pursuant to the Management Agreements, the Company shall provide for installation, hosting, maintenance and repair and provide ancillary services necessary to operate the Bitcoin Hardware. In accordance with each of the Management Agreements, each of the Users will gain a portion of the Bitcoin mined called the user distribution portion (“User Distribution Portion”). The User Distribution Portion is 50% of the amount of Bitcoin mined net of the operating fee (10% of the total Bitcoin mined) and the electricity cost. Furthermore, upon execution of the Management Agreements, as an incentive to the Users, the Company issued to the Users an aggregate of 436,100 shares of the Company’s common stock and a Series F warrant to purchase 436,100 shares of the Company’s common stock at an initial exercise price of $2.00 per share exercisable for a period of three years to the Users. The Company issued the shares of common stock and issued all three Series F warrants for the benefits of the three Users on the respective dates of the execution of the Management Agreements. On February 28, 2018, the Company and Buckhead Crypto terminated their Management Agreement. The Company purchased the Bitcoin mining machines for $767 and refunded prepaid electricity paid by Buckhead Crypto of $133. On February 13, 2018, the Company entered into a new management agreement with a third party with terms similar to the other Management Agreements. The third party agreed to purchase 200 Bitmain Antminer S9 mining computers for a total of $428 to mine Bitcoin with the Company acting as the exclusive manager. This management agreement is in effect for 24 months from the date that the Bitcoin Hardware begins mining operations, and may be terminated by mutual written agreement. As of June 30, 2018 and December 31, 2017, the Company owed $193 and $0, respectively, to the Users as the User Distribution Portion under the Management Agreements. This amount is included as accrued expenses on the Company’s unaudited condensed consolidated balance sheet. Legal On April 4, 2017, an action was filed against the Company by a former shareholder Barry Honig and others in the United States District Court for the Southern District of New York (the “Court”) against the Company and certain of its officers and directors (the “Breach of Contract Action”). The Breach of Contract Action alleged claims for breach of contract, tortious interference with contractual relations, and unjust enrichment related to the Company’s unsuccessful attempt to acquire D–Vasive, Inc. (“D-Vasive”) and Demonsaw LLC (“Demonsaw”) in 2016 and the alleged resulting harm to certain D–Vasive, and Demonsaw noteholders. The defendants filed a motion to dismiss on June 5, 2017. On June 26, 2012 the plaintiffs filed an amended complaint. On July 24, 2017, the defendants subsequently filed a second motion to dismiss that amended complaint. On March 19, 2018, the Court issued a Memorandum Opinion & Order dismissing the breach of contract and tortious interference claims, but permitting the unjust enrichment claim to proceed. On April 2, 2018, the defendants filed a motion asking the Court to reconsider its decision to permit the unjust enrichment claim to proceed. On April 30, the Court issued a civil case management plan and scheduling order setting deadlines for discovery in the action. The Court denied the defendant’s motion for reconsideration by order dated May 4, 2018. On May 23, 2018, the plaintiffs and the defendants agreed to dismiss the Breach of Contract Action and filed a stipulation of dismissal with prejudice (the “Stipulation of Dismissal”) with the Court. The Court “so ordered” the Stipulation of Dismissal on May 24, 2018 and dismissed the case in its entirety. Employment agreements On March 8, 2018, the Company entered into an employment with Mr. Robert Lowrey, effective March 1, 2018. Mr. Lowrey’s employment agreement provides that he has been appointed for an initial term of two years. Mr. Lowrey is entitled to receive an annualized base salary of $240. Mr. Lowrey will also receive a one-time signing bonus of $10. Mr. Lowrey is also eligible for a cash and/or equity bonus as the Compensation Committee may determine, from time to time, based on meeting performance objectives and bonus criteria to be mutually identified by Mr. Lowrey and the Compensation Committee. In connection with the execution of his employment agreement, the Company issued to Mr. Lowrey 750,000 shares of the Company’s restricted common stock, pursuant to the Company’s 2016 Stock Option Plan vesting over a two year period. On April 1, 2018, the Company entered into an Amended and Restated Executive Employment Agreement (the “Employment Agreement”) with Mr. Robert Ladd, which was executed on April 6, 2018. The Employment Agreement provides that Mr. Ladd has been reappointed for an initial term of two years. Mr. Ladd is entitled to receive an annualized base salary of $360 and is also eligible for a cash and/or equity bonus as the Compensation Committee may determine, from time to time, based on meeting performance objectives and bonus criteria to be mutually identified by Mr. Ladd and the Compensation Committee. In connection with the execution of the Employment Agreement, the Company issued to Mr. Ladd 600,000 shares of the Company’s restricted common stock, pursuant to the Company’s 2016 Stock Option Plan, vesting over a two-year period.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Note 9. Commitments and Contingencies

Operating commitments

On December 7, 2017 and January 9, 2018, the Company entered into agreements with Beacon whereby Beacon agreed to provide hosting services to the Company for purposes of its mining operations and provide 15 megawatts of uninterrupted power in Sweden. The agreement is for a term of 24 months for a fee of $810 per month. The Company prepaid the first and last month of service in the amount of $1,620.

As described in Note 1, Beacon did not meet its obligations under the agreement with the Company. On May 16, 2018, the Company notified Beacon that it was in breach of the agreement, demanding reimbursement of the Company’s prepayment and notifying Beacon that it would not be paying the monthly fee due under the agreement. Beacon has not responded to the Company’s notification and the Company is currently exploring its potential remedies against Beacon.

On June 30, 2018, the Company wrote off the un-recognized portion of its prepayment in the amount of $1,350 to restructuring charge on the Company’s unaudited condensed consolidated statements of operations and consolidated loss.

Management agreements

On October 12, 2017, MGT entered into two management agreements with two accredited investors, Deep South Mining LLC and BDLM, LLC. On November 21, 2017, the Company entered into a third management agreement with another accredited investor, Buckhead Crypto, LLC (“Buckhead Crypto”) (all three accredited investors together are “Users”, each agreement a “Management Agreement”, and all three agreements together are “Management Agreements”). Each of the Users agreed on substantially similar terms to purchase an aggregate of 2,376 Bitmain Antminer S9 mining computers (the “Bitcoin Hardware”) for a total of $3,650 to mine Bitcoin with the Company acting as the exclusive manager for each of the Users. In addition, the Users have agreed to pay to the Company, in advance, the first three months of expected electricity costs of the Bitcoin mining operations in the sum of $691, which is included in Other Payables on the Company’s consolidated balance sheet as of December 31, 2017. Initial electricity cost for the first three months following delivery of the Bitcoin Hardware shall be reimbursed to the Users within the first three months of operation. Each Management Agreement is in effect for 24 months from the date that the Bitcoin Hardware begins mining operations, and may be terminated by mutual written agreement.

Pursuant to the Management Agreements, the Company shall provide for installation, hosting, maintenance and repair and provide ancillary services necessary to operate the Bitcoin Hardware. In accordance with each of the Management Agreements, each of the Users will gain a portion of the Bitcoin mined called the user distribution portion (“User Distribution Portion”). The User Distribution Portion is 50% of the amount of Bitcoin mined net of the operating fee (10% of the total Bitcoin mined) and the electricity cost.

Furthermore, upon execution of the Management Agreements, as an incentive to the Users, the Company issued to the Users an aggregate of 436,100 shares of the Company’s common stock and a Series F warrant to purchase 436,100 shares of the Company’s common stock at an initial exercise price of $2.00 per share exercisable for a period of three years to the Users. The Company issued the shares of common stock and issued all three Series F warrants for the benefits of the three Users on the respective dates of the execution of the Management Agreements.

On February 28, 2018, the Company and Buckhead Crypto terminated their Management Agreement. The Company purchased the Bitcoin mining machines for $767 and refunded prepaid electricity paid by Buckhead Crypto of $133.

On February 13, 2018, the Company entered into a new management agreement with a third party with terms similar to the other Management Agreements. The third party agreed to purchase 200 Bitmain Antminer S9 mining computers for a total of $428 to mine Bitcoin with the Company acting as the exclusive manager. This management agreement is in effect for 24 months from the date that the Bitcoin Hardware begins mining operations, and may be terminated by mutual written agreement.

As of June 30, 2018 and December 31, 2017, the Company owed $193 and $0, respectively, to the Users as the User Distribution Portion under the Management Agreements. This amount is included as accrued expenses on the Company’s unaudited condensed consolidated balance sheet.

Legal

On April 4, 2017, an action was filed against the Company by a former shareholder Barry Honig and others in the United States District Court for the Southern District of New York (the “Court”) against the Company and certain of its officers and directors (the “Breach of Contract Action”). The Breach of Contract Action alleged claims for breach of contract, tortious interference with contractual relations, and unjust enrichment related to the Company’s unsuccessful attempt to acquire D–Vasive, Inc. (“D-Vasive”) and Demonsaw LLC (“Demonsaw”) in 2016 and the alleged resulting harm to certain D–Vasive, and Demonsaw noteholders. The defendants filed a motion to dismiss on June 5, 2017. On June 26, 2012 the plaintiffs filed an amended complaint. On July 24, 2017, the defendants subsequently filed a second motion to dismiss that amended complaint. On March 19, 2018, the Court issued a Memorandum Opinion & Order dismissing the breach of contract and tortious interference claims, but permitting the unjust enrichment claim to proceed. On April 2, 2018, the defendants filed a motion asking the Court to reconsider its decision to permit the unjust enrichment claim to proceed. On April 30, the Court issued a civil case management plan and scheduling order setting deadlines for discovery in the action. The Court denied the defendant’s motion for reconsideration by order dated May 4, 2018.

On May 23, 2018, the plaintiffs and the defendants agreed to dismiss the Breach of Contract Action and filed a stipulation of dismissal with prejudice (the “Stipulation of Dismissal”) with the Court. The Court “so ordered” the Stipulation of Dismissal on May 24, 2018 and dismissed the case in its entirety.

Employment agreements

On March 8, 2018, the Company entered into an employment with Mr. Robert Lowrey, effective March 1, 2018. Mr. Lowrey’s employment agreement provides that he has been appointed for an initial term of two years. Mr. Lowrey is entitled to receive an annualized base salary of $240. Mr. Lowrey will also receive a one-time signing bonus of $10. Mr. Lowrey is also eligible for a cash and/or equity bonus as the Compensation Committee may determine, from time to time, based on meeting performance objectives and bonus criteria to be mutually identified by Mr. Lowrey and the Compensation Committee. In connection with the execution of his employment agreement, the Company issued to Mr. Lowrey 750,000 shares of the Company’s restricted common stock, pursuant to the Company’s 2016 Stock Option Plan vesting over a two year period.

On April 1, 2018, the Company entered into an Amended and Restated Executive Employment Agreement (the “Employment Agreement”) with Mr. Robert Ladd, which was executed on April 6, 2018. The Employment Agreement provides that Mr. Ladd has been reappointed for an initial term of two years. Mr. Ladd is entitled to receive an annualized base salary of $360 and is also eligible for a cash and/or equity bonus as the Compensation Committee may determine, from time to time, based on meeting performance objectives and bonus criteria to be mutually identified by Mr. Ladd and the Compensation Committee. In connection with the execution of the Employment Agreement, the Company issued to Mr. Ladd 600,000 shares of the Company’s restricted common stock, pursuant to the Company’s 2016 Stock Option Plan, vesting over a two-year period.