Condensed Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands | Total | Class A | Class B | Convertible Preferred Units | Common Units | Common Stock Class A | Common Stock Class B | Additional Paid-in Capital | Accumulated Deficit | Noncontrolling Interests |
Beginning balance (shares) at Dec. 31, 2021 | 6,000,000 | | | | | | | | | |
Beginning balance at Dec. 31, 2021 | $ 2,140 | | | | | | | | | |
Increase (Decrease) in Temporary Equity [Roll Forward] | | | | | | | | | | |
Reverse recapitalization, net (shares) | 6,000,000 | | | | | | | | | |
Reverse recapitalization, net | $ 2,140 | | | | | | | | | |
Ending balance (shares) at Jun. 30, 2022 | 0 | | | | | | | | | |
Ending balance at Jun. 30, 2022 | $ 0 | | | | | | | | | |
Beginning balance (shares) at Dec. 31, 2021 | | | | 633,261,000 | | | | | | |
Beginning balance at Dec. 31, 2021 | | | | $ 819,694 | $ 28,184 | | | | | |
Beginning balance (shares) at Dec. 31, 2021 | | | | | 9,074,000 | | | | | |
Beginning balance (shares) at Dec. 31, 2021 | | | | | | 0 | 0 | | | |
Beginning balance at Dec. 31, 2021 | 66,258 | | | | | $ 0 | $ 0 | $ 0 | $ (781,620) | $ 0 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | |
Exercise of common unit options (shares) | | | | | 3,764,000 | | | | | |
Exercise of common unit options | 847 | | | | $ 847 | | | | | |
Repurchase of common units (shares) | | | | | (358,000) | | | | | |
Repurchase of common units | (566) | | | | $ (566) | | | | | |
Issuance of treasury units (shares) | | | | | 12,000 | | | | | |
Issuance of treasury units | 20 | | | | $ 20 | | | | | |
Conversion of equity award to liability award | (50) | | | | (50) | | | | | |
Equity-based compensation expense | 2,132 | | | | $ 1,359 | | | 773 | | |
Net loss | (44,753) | | | | | | | | | |
Reverse recapitalization, net (in shares) | | | | (633,261,000) | (12,492,000) | 42,028,000 | 178,397,000 | | | |
Reverse recapitalization, net | 307,850 | | | $ (819,694) | $ (29,794) | $ 4 | $ 18 | 220,606 | 656,597 | 280,113 |
Net loss attributable to legacy NuScale LLC holders prior to Transaction | (31,155) | | | | | | | | (31,155) | |
Net loss after the Transaction | (13,598) | | | | | | | | (2,593) | (11,005) |
Ending balance (shares) at Jun. 30, 2022 | | | | 0 | | | | | | |
Ending balance at Jun. 30, 2022 | | | | $ 0 | $ 0 | | | | | |
Ending balance (shares) at Jun. 30, 2022 | | | | | 0 | | | | | |
Ending balance (shares) at Jun. 30, 2022 | | | | | | 42,028,000 | 178,397,000 | | | |
Ending balance at Jun. 30, 2022 | $ 331,738 | | | | | $ 4 | $ 18 | 221,379 | (158,771) | 269,108 |
Beginning balance (shares) at Mar. 31, 2022 | 6,000,000 | | | | | | | | | |
Beginning balance at Mar. 31, 2022 | $ 2,140 | | | | | | | | | |
Increase (Decrease) in Temporary Equity [Roll Forward] | | | | | | | | | | |
Reverse recapitalization, net (shares) | (6,000,000) | | | | | | | | | |
Reverse recapitalization, net | $ (2,140) | | | | | | | | | |
Ending balance (shares) at Jun. 30, 2022 | 0 | | | | | | | | | |
Ending balance at Jun. 30, 2022 | $ 0 | | | | | | | | | |
Beginning balance (shares) at Mar. 31, 2022 | | | | 633,261,000 | | | | | | |
Beginning balance at Mar. 31, 2022 | | | | $ 819,694 | $ 29,082 | | | | | |
Beginning balance (shares) at Mar. 31, 2022 | | | | | 11,671,000 | | | | | |
Beginning balance (shares) at Mar. 31, 2022 | | | | | | 0 | 0 | | | |
Beginning balance at Mar. 31, 2022 | 43,783 | | | | | $ 0 | $ 0 | 0 | (804,993) | 0 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | |
Exercise of common unit options (shares) | | | | | 836,000 | | | | | |
Exercise of common unit options | 377 | | | | $ 377 | | | | | |
Repurchase of common units (shares) | | | | | (15,000) | | | | | |
Repurchase of common units | (3) | | | | $ (3) | | | | | |
Issuance of treasury units | 0 | | | | | | | | | |
Conversion of equity award to liability award | 0 | | | | | | | | | |
Equity-based compensation expense | 1,111 | | | | $ 338 | | | 773 | | |
Net loss | (21,380) | | | | | | | | | |
Reverse recapitalization, net (in shares) | | | | (633,261,000) | (12,492,000) | 42,028,000 | 178,397,000 | | | |
Reverse recapitalization, net | 307,850 | | | $ (819,694) | $ (29,794) | $ 4 | $ 18 | 220,606 | 656,597 | 280,113 |
Net loss attributable to legacy NuScale LLC holders prior to Transaction | (7,782) | | | | | | | | (7,782) | |
Net loss after the Transaction | (13,598) | | | | | | | | (2,593) | (11,005) |
Ending balance (shares) at Jun. 30, 2022 | | | | 0 | | | | | | |
Ending balance at Jun. 30, 2022 | | | | $ 0 | $ 0 | | | | | |
Ending balance (shares) at Jun. 30, 2022 | | | | | 0 | | | | | |
Ending balance (shares) at Jun. 30, 2022 | | | | | | 42,028,000 | 178,397,000 | | | |
Ending balance at Jun. 30, 2022 | 331,738 | | | | | $ 4 | $ 18 | 221,379 | (158,771) | 269,108 |
Beginning balance (shares) at Dec. 31, 2022 | | 69,353,019 | 157,090,820 | | | 69,353,000 | 157,091,000 | | | |
Beginning balance at Dec. 31, 2022 | 277,087 | | | | | $ 7 | $ 16 | 296,748 | (182,092) | 162,408 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | |
Equity-based compensation expense | 8,090 | | | | | | | 8,090 | | |
Exercise of common share options and warrants and vested RSUs (in shares) | | | | | | 2,321,000 | | | | |
Exercise of common share options and warrants and vested RSUs | 4,371 | | | | | | | 4,371 | | |
Conversion of combined interests into Class A common stock (in shares) | | 2,370,805 | (2,370,805) | | | 2,371,000 | (2,371,000) | | | |
Conversion of combined interests into Class A common stock | 0 | | | | | | | | | |
Rebalancing of ownership percentage for conversion of combined interest into Class A shares | 0 | | | | | | | 3,409 | | (3,409) |
Net loss | (65,344) | | | | | | | | (20,485) | (44,859) |
Net loss attributable to legacy NuScale LLC holders prior to Transaction | 0 | | | | | | | | | |
Ending balance (shares) at Jun. 30, 2023 | | 74,045,206 | 154,720,015 | | | 74,045,000 | 154,720,000 | | | |
Ending balance at Jun. 30, 2023 | 224,204 | | | | | $ 7 | $ 16 | 312,618 | (202,577) | 114,140 |
Beginning balance (shares) at Mar. 31, 2023 | | | | | | 70,061,000 | 157,091,000 | | | |
Beginning balance at Mar. 31, 2023 | 246,731 | | | | | $ 7 | $ 16 | 302,487 | (193,054) | 137,275 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | |
Equity-based compensation expense | 4,453 | | | | | | | 4,453 | | |
Exercise of common share options and warrants and vested RSUs (in shares) | | | | | | 1,613,000 | | | | |
Exercise of common share options and warrants and vested RSUs | 2,754 | | | | | | | 2,754 | | |
Conversion of combined interests into Class A common stock (in shares) | | 2,370,805 | (2,370,805) | | | 2,371,000 | (2,371,000) | | | |
Conversion of combined interests into Class A common stock | 0 | | | | | | | | | |
Rebalancing of ownership percentage for conversion of combined interest into Class A shares | 0 | | | | | | | 2,924 | | (2,924) |
Net loss | (29,734) | | | | | | | | (9,523) | (20,211) |
Net loss attributable to legacy NuScale LLC holders prior to Transaction | 0 | | | | | | | | | |
Ending balance (shares) at Jun. 30, 2023 | | 74,045,206 | 154,720,015 | | | 74,045,000 | 154,720,000 | | | |
Ending balance at Jun. 30, 2023 | $ 224,204 | | | | | $ 7 | $ 16 | $ 312,618 | $ (202,577) | $ 114,140 |