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Accounting And Reporting Policies - Subsidiaries of the Company (Details) | 12 Months Ended
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Dec. 31, 2018
M-tron Industries, Inc. [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%
Piezo Technology, Inc. [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%
Piezo Technology India Private Ltd. [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 99.90%
M-tron Asia LLC [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%
M-tron Industries, Ltd. [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%
GC Opportunities Ltd. [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%
M-tron Services Ltd [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%
Precise Time and Frequenc, LLC [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%
Lynch Systems, Inc. [Member] |
Accounting And Reporting Policies [Line Items] |
Owned by The LGL Group, Inc. | 100.00%

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- Definition Accounting and reporting policies. + References No definition available. + Details
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- Definition Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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