Sale of patents (Details Textual) (USD $) In Thousands, unless otherwise specified	6 Months Ended	9 Months Ended
Jun. 30, 2013	Sep. 30, 2013
Foreign withholding tax amount	$ 248
Escrow Agent fee		1
Cash Received on sale of patent	651
Gross Proceeds From Sale Of Medical Patents		1,500
Net Proceeds From Sale Of Medical Patents	750
Escrow Deposit	99
Munich Innovation Group GmbH [Member]
Commission Paid	$ 501

The cash inflow associates with net proceeds from the sale of patent during the reporting period.

No definition available.

Name:	mgt_CashReceivedOnSaleOfPatent
Namespace Prefix:	mgt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount represents cash outflow due to commission paid to broker.

+ References

No definition available.

+ Details

Name:	mgt_CommissionPaid
Namespace Prefix:	mgt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

An fee is charged by the escrow agent for transacting the third parties documents during the reporting period.

+ References

No definition available.

+ Details

Name:	mgt_EscrowAgentFee
Namespace Prefix:	mgt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of adjustment related to the foreign withholding tax of income or expense on the sale of patent during the reporting period.

+ References

No definition available.

+ Details

Name:	mgt_ForeignWithholdingTaxAmount
Namespace Prefix:	mgt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount represents cash inflow of gross proceeds from the sale of medical patents during the period.

+ References

No definition available.

+ Details

Name:	mgt_GrossProceedsFromSaleOfMedicalPatents
Namespace Prefix:	mgt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount represents the net proceeds from the sale of medical patents during the period.

+ References

No definition available.

+ Details

Name:	mgt_NetProceedsFromSaleOfMedicalPatents
Namespace Prefix:	mgt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_EscrowDeposit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant