Acquisition of Foresight Energy, Ltd. - Summary of Provisional Fair Values of Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands		Dec. 31, 2023		Sep. 30, 2023	Jan. 25, 2023
Developed Technology
Assets Acquired
Assets acquired					$ 1,800
Customer Relationships
Assets Acquired
Assets acquired					200
fSight
Consideration transferred:
Fair value of common stock issued	[1]	$ 10,974
Fair value of contingent shares	[1]	2,167
Deemed settlement of loan payable		527	[1]		500
Total consideration		13,668	[1]		$ 13,700
Assets Acquired
Cash and cash equivalents		55
Accounts receivable		117
Property and equipment		9
Goodwill		12,209
Total assets acquired		14,380
Liabilities Assumed
Accounts payable		418
Accrued expenses		294
Net assets acquired		13,668
fSight | As Previously Reported
Consideration transferred:
Fair value of common stock issued	[1]			$ 10,974
Fair value of contingent shares	[1]			2,167
Deemed settlement of loan payable	[1]			527
Total consideration	[1]			13,668
Assets Acquired
Cash and cash equivalents				55
Accounts receivable				117
Property and equipment				9
Goodwill				13,079
Total assets acquired				15,250
Liabilities Assumed
Accounts payable				418
Accrued expenses				294
Other current liabilities				89
Other long-term liabilities				781
Net assets acquired				13,668
fSight | PPA Adjustments
Assets Acquired
Goodwill		(870)
Total assets acquired		(870)
Liabilities Assumed
Other current liabilities		(89)
Other long-term liabilities		(781)
Net assets acquired		(870)
fSight | Developed Technology
Assets Acquired
Assets acquired		1,820
fSight | Developed Technology | As Previously Reported
Assets Acquired
Assets acquired				1,820
fSight | Customer Relationships
Assets Acquired
Assets acquired		$ 170
fSight | Customer Relationships | As Previously Reported
Assets Acquired
Assets acquired				$ 170

[1] The reported provisional amounts presented above have been updated from the Company’s S-1 filed with the SEC on June 22, 2023. The Company recorded an out of period adjustment related to the adjustment of the provisional fair market value of the Legacy Tigo common stock that was used to develop the calculation of the purchase price consideration. The Company does not believe that the adjustment had a material impact on its consolidated statements of operations and comprehensive loss, consolidated balance sheets, or consolidated statements of cash flows in any periods previously reported.