Related Party Transactions	12 Months Ended
Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	D. Related Party Transactions Certain balances held and invested in various mutual funds are managed by g.research (the "Fund Manager"). Marc Gabelli, our non-executive chairman of the board, who is also a greater than 10% stockholder, currently serves as an executive officer of the Fund Manager. The brokerage and fund transactions in 2019 and 2018 were directed solely at the discretion of the Company’s management. As of December 31, 2019, the balance with the Fund Manager totaled $14,613,000, including $8,992,000 which is classified within cash and cash equivalents on the accompanying consolidated balance sheets, and $5,621,000 which is classified as marketable securities on the accompanying consolidated balance sheets. Amounts invested generated $493,000 of realized and unrealized investment income during 2019 that is included within other income, net on the accompanying consolidated statement of operations. As of December 31, 2018, the balance with the Fund Manager totaled $16,270,000, including $12,506,000 which is classified within cash and cash equivalents on the accompanying consolidated balance sheet, and $3,764,000 which is classified as marketable securities on the accompanying consolidated balance sheet. Amounts invested generated $203,000 of realized and unrealized investment income during 2018 that is included within other income, net on the accompanying consolidated statement of operations. Fund management fees earned by the Fund Manager are anticipated to average less than 0.35% of the asset balances under management on an annual basis. Marc Gabelli, our Non-Executive Chairman also serves as Chairman and Chief Executive Officer of the SPAC and has invested in the Sponsor, and is the initial managing member of Nevada GP. Timothy Foufas, a member of LGL’s board of directors, is also a member of the Sponsor and Chief Operating Officer of the SPAC, has invested in the Sponsor and is a member of Nevada GP. Patrick Huvane, LGL’s senior vice president of business development, is a member of both the Company and the SPAC’s management team. Michael J. Ferrantino, Jr., a member of the Company’s board of directors, is also a member of the Sponsor and a board member for the SPAC. Under separate arrangement, these people may be eligible to receive incentive compensation should the SPAC complete a successful acquisition. On May 2, 2019, the Company agreed to loan the Sponsor an aggregate of up to $150,000 to cover expenses related to the SPAC IPO pursuant to a promissory note (the “Note”). This loan was non-interest bearing and payable on the earlier of (i) April 30, 2020, (ii) the completion of the SPAC IPO or (iii) the date on which the Company determined not to proceed with the SPAC IPO. The Note was repaid on December 19, 2019.

Related Party Transactions

12 Months Ended

Dec. 31, 2019

D. Related Party Transactions

Certain balances held and invested in various mutual funds are managed by g.research (the "Fund Manager"). Marc Gabelli, our non-executive chairman of the board, who is also a greater than 10% stockholder, currently serves as an executive officer of the Fund Manager. The brokerage and fund transactions in 2019 and 2018 were directed solely at the discretion of the Company’s management.

As of December 31, 2019, the balance with the Fund Manager totaled $14,613,000, including $8,992,000 which is classified within cash and cash equivalents on the accompanying consolidated balance sheets, and $5,621,000 which is classified as marketable securities on the accompanying consolidated balance sheets. Amounts invested generated $493,000 of realized and unrealized investment income during 2019 that is included within other income, net on the accompanying consolidated statement of operations.

As of December 31, 2018, the balance with the Fund Manager totaled $16,270,000, including $12,506,000 which is classified within cash and cash equivalents on the accompanying consolidated balance sheet, and $3,764,000 which is classified as marketable securities on the accompanying consolidated balance sheet. Amounts invested generated $203,000 of realized and unrealized investment income during 2018 that is included within other income, net on the accompanying consolidated statement of operations.

Fund management fees earned by the Fund Manager are anticipated to average less than 0.35% of the asset balances under management on an annual basis.

Marc Gabelli, our Non-Executive Chairman also serves as Chairman and Chief Executive Officer of the SPAC and has invested in the Sponsor, and is the initial managing member of Nevada GP. Timothy Foufas, a member of LGL’s board of directors, is also a member of the Sponsor and Chief Operating Officer of the SPAC, has invested in the Sponsor and is a member of Nevada GP. Patrick Huvane, LGL’s senior vice president of business development, is a member of both the Company and the SPAC’s management team. Michael J. Ferrantino, Jr., a member of the Company’s board of directors, is also a member of the Sponsor and a board member for the SPAC. Under separate arrangement, these people may be eligible to receive incentive compensation should the SPAC complete a successful acquisition.

On May 2, 2019, the Company agreed to loan the Sponsor an aggregate of up to $150,000 to cover expenses related to the SPAC IPO pursuant to a promissory note (the “Note”). This loan was non-interest bearing and payable on the earlier of (i) April 30, 2020, (ii) the completion of the SPAC IPO or (iii) the date on which the Company determined not to proceed with the SPAC IPO. The Note was repaid on December 19, 2019.