Description of Organization and Business Operations	12 Months Ended
Dec. 31, 2020
Accounting Policies [Abstract]
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	NOTE 1—DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS The Company was incorporated in Delaware on October 11, 2018 for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. *Business Combination* On February 9, 2021, the Company consummated the previously announced Business Combination pursuant to the Agreement and Plan of Merger and Reorganization, or the Merger Agreement, dated November 24, 2020 and as amended on January 12, 2021 and further amended on February 8, 2021, by and among the Company, INSU II Merger Sub Corp., a Delaware corporation and a direct wholly owned subsidiary of the Company, or Merger Sub, and MetroMile, Inc., a Delaware corporation, or Legacy Metromile, pursuant to which, among other things, Merger Sub merged with and into Legacy Metromile, or the Merger, and together with the other transactions contemplated by the Merger Agreement, the Business Combination, with Legacy Metromile surviving the merger as a wholly owned subsidiary of the Company. *Business Prior to the Business Combination* All activity through December 31, 2020 is related to the Company’s formation, the Initial Public Offering, which is described below, identifying a target company for a Business Combination, and activities in connection with the proposed acquisition of Legacy Metromile. The registration statement for the Company’s Initial Public Offering was declared effective on September 2, 2020. On September 8, 2020 the Company consummated the Initial Public Offering of 23,000,000 units, or the Units, and, with respect to the shares of Class A common stock included in the Units sold, the Public Shares, which included the full exercise by the underwriters of their over-allotment option in the amount of 3,000,000 Units, at $10.00 per Unit, generating gross proceeds of $230,000,000, which is described in Note 4. Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 540,000 units, or the Placement Units, at a price of $10.00 per Placement Unit in a private placement to Insurance Acquisition Sponsor II, LLC, or INSU Sponsor, Dioptra Advisors II, LLC, together with INSU Sponsor, the Sponsor, and Cantor, generating gross proceeds of $5,400,000, which is described in Note 5. Transaction costs amounted to $14,233,916, consisting of $4,000,000 in cash underwriting fees, $9,800,000 of deferred underwriting fees and $433,916 of other offering costs. Following the closing of the Initial Public Offering on September 8, 2020, an amount of $230,000,000 ($10.00 per Unit) from the net proceeds of the sale of the Units in the Initial Public Offering and the sale of the Placement Units was placed in a trust account, or the Trust Account, which will be invested in U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act of 1940, as amended, or the Investment Company Act, with a maturity of 185 days or less, or in money market funds meeting certain conditions under Rule 2a-7 of the Investment Company Act, as determined by the Company, until the Closing.

Description of Organization and Business Operations

12 Months Ended

Dec. 31, 2020

DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS

NOTE 1—DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS

The Company was incorporated in Delaware on October 11, 2018 for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses.

Business Combination

On February 9, 2021, the Company consummated the previously announced Business Combination pursuant to the Agreement and Plan of Merger and Reorganization, or the Merger Agreement, dated November 24, 2020 and as amended on January 12, 2021 and further amended on February 8, 2021, by and among the Company, INSU II Merger Sub Corp., a Delaware corporation and a direct wholly owned subsidiary of the Company, or Merger Sub, and MetroMile, Inc., a Delaware corporation, or Legacy Metromile, pursuant to which, among other things, Merger Sub merged with and into Legacy Metromile, or the Merger, and together with the other transactions contemplated by the Merger Agreement, the Business Combination, with Legacy Metromile surviving the merger as a wholly owned subsidiary of the Company.

Business Prior to the Business Combination

All activity through December 31, 2020 is related to the Company’s formation, the Initial Public Offering, which is described below, identifying a target company for a Business Combination, and activities in connection with the proposed acquisition of Legacy Metromile.

The registration statement for the Company’s Initial Public Offering was declared effective on September 2, 2020. On September 8, 2020 the Company consummated the Initial Public Offering of 23,000,000 units, or the Units, and, with respect to the shares of Class A common stock included in the Units sold, the Public Shares, which included the full exercise by the underwriters of their over-allotment option in the amount of 3,000,000 Units, at $10.00 per Unit, generating gross proceeds of $230,000,000, which is described in Note 4.

Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 540,000 units, or the Placement Units, at a price of $10.00 per Placement Unit in a private placement to Insurance Acquisition Sponsor II, LLC, or INSU Sponsor, Dioptra Advisors II, LLC, together with INSU Sponsor, the Sponsor, and Cantor, generating gross proceeds of $5,400,000, which is described in Note 5.

Transaction costs amounted to $14,233,916, consisting of $4,000,000 in cash underwriting fees, $9,800,000 of deferred underwriting fees and $433,916 of other offering costs.

Following the closing of the Initial Public Offering on September 8, 2020, an amount of $230,000,000 ($10.00 per Unit) from the net proceeds of the sale of the Units in the Initial Public Offering and the sale of the Placement Units was placed in a trust account, or the Trust Account, which will be invested in U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act of 1940, as amended, or the Investment Company Act, with a maturity of 185 days or less, or in money market funds meeting certain conditions under Rule 2a-7 of the Investment Company Act, as determined by the Company, until the Closing.