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Condensed Consolidated Statements of Changes in Redeemable Non-Controlling Interests and Stockholders' Equity - USD ($) $ in Thousands | Total | Class A Common Stock | Class B Common Stock | Common Stock Class A Common Stock | Common Stock Class B Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Treasury Stock | Non-controlling Interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Redeemable non-controlling interests, beginning balance at Dec. 31, 2020 | $ 38,850 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Distributions to redeemable non-controlling interests | (648) |  |  |  |  |  |  |  |  |
Accretion of tax equity financing fees | 61 |  |  |  |  |  |  |  |  |
Net income | 5,488 |  |  |  |  |  |  |  |  |
Redeemable non-controlling interests, ending balance at Jun. 30, 2021 | 46,003 |  |  |  |  |  |  |  |  |
Beginning balance (in shares) at Dec. 31, 2020 |  |  |  | 30,224,654 | 18,000,000 |  |  |  |  |
Treasury stock, beginning balance (in shares) at Dec. 31, 2020 |  |  |  |  |  |  |  |  | 2,101,795 |
Beginning balance at Dec. 31, 2020 | 492,813 |  |  | $ 3 | $ 2 | $ 145,496 | $ 368,390 | $ (9,290) | $ (11,788) | $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Equity offering cost adjustment (in shares) |  |  |  | 2,875,000 |  |  |  |  |  |
Equity offering cost adjustment | 120,081 |  |  |  |  | 120,081 |  |  |  |
Exercise of stock options (in shares) |  |  |  | 267,380 |  |  |  |  |  |
Exercise of stock options | 2,611 |  |  |  |  | 2,611 |  |  |  |
Stock-based compensation expense | 2,115 |  |  |  |  | 2,115 |  |  |  |
Employee stock purchase plan (in shares) |  |  |  | 15,297 |  |  |  |  |  |
Employee stock purchase plan | 652 |  |  |  |  | 652 |  |  |  |
Unrealized gain (loss) from interest rate hedges, net | 1,645 |  |  |  |  |  |  | 1,645 |  |
Foreign currency translation adjustment | 891 |  |  |  |  |  |  | 891 |  |
Accretion of tax equity financing fees | (61) |  |  |  |  |  | (61) |  |  |
Contributions from non-controlling interest | 2,252 |  |  |  |  |  |  |  |  |
Net income | 24,829 |  |  |  |  |  | 24,829 |  |  |
Ending balance (in shares) at Jun. 30, 2021 |  |  |  | 33,382,331 | 18,000,000 |  |  |  |  |
Treasury stock, ending balance (in shares) at Jun. 30, 2021 |  |  |  |  |  |  |  |  | 2,101,795 |
Ending balance at Jun. 30, 2021 | 645,576 |  |  | $ 3 | $ 2 | 270,955 | 393,158 | (6,754) | $ (11,788) | 0
Redeemable non-controlling interests, beginning balance at Mar. 31, 2021 | 39,668 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Distributions to redeemable non-controlling interests | (195) |  |  |  |  |  |  |  |  |
Accretion of tax equity financing fees | 30 |  |  |  |  |  |  |  |  |
Net income | 4,231 |  |  |  |  |  |  |  |  |
Redeemable non-controlling interests, ending balance at Jun. 30, 2021 | 46,003 |  |  |  |  |  |  |  |  |
Beginning balance (in shares) at Mar. 31, 2021 |  |  |  | 33,265,925 | 18,000,000 |  |  |  |  |
Treasury stock, beginning balance (in shares) at Mar. 31, 2021 |  |  |  |  |  |  |  |  | 2,101,795 |
Beginning balance at Mar. 31, 2021 | 628,855 |  |  | $ 3 | $ 2 | 267,864 | 379,533 | (6,759) | $ (11,788) | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Equity offering cost adjustment | (135) |  |  |  |  | (135) |  |  |  |
Exercise of stock options (in shares) |  |  |  | 101,109 |  |  |  |  |  |
Exercise of stock options | 1,225 |  |  |  |  | 1,225 |  |  |  |
Stock-based compensation expense | 1,349 |  |  |  |  | 1,349 |  |  |  |
Employee stock purchase plan (in shares) |  |  |  | 15,297 |  |  |  |  |  |
Employee stock purchase plan | 652 |  |  |  |  | 652 |  |  |  |
Unrealized gain (loss) from interest rate hedges, net | (472) |  |  |  |  |  |  | (472) |  |
Foreign currency translation adjustment | 477 |  |  |  |  |  |  | 477 |  |
Accretion of tax equity financing fees | (30) |  |  |  |  |  | (30) |  |  |
Contributions from non-controlling interest | 2,269 |  |  |  |  |  |  |  |  |
Net income | 13,655 |  |  |  |  |  | 13,655 |  |  |
Ending balance (in shares) at Jun. 30, 2021 |  |  |  | 33,382,331 | 18,000,000 |  |  |  |  |
Treasury stock, ending balance (in shares) at Jun. 30, 2021 |  |  |  |  |  |  |  |  | 2,101,795 |
Ending balance at Jun. 30, 2021 | 645,576 |  |  | $ 3 | $ 2 | 270,955 | 393,158 | (6,754) | $ (11,788) | 0
Redeemable non-controlling interests, beginning balance at Dec. 31, 2021 | 46,182 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Distributions to redeemable non-controlling interests | (651) |  |  |  |  |  |  |  |  |
Accretion of tax equity financing fees | 54 |  |  |  |  |  |  |  |  |
Investment fund call option exercise | (238) |  |  |  |  |  |  |  |  |
Net income | 2,571 |  |  |  |  |  |  |  |  |
Redeemable non-controlling interests, ending balance at Jun. 30, 2022 | $ 47,918 |  |  |  |  |  |  |  |  |
Beginning balance (in shares) at Dec. 31, 2021 |  | 33,716,309 | 18,000,000 | 33,716,309 | 18,000,000 |  |  |  |  |
Treasury stock, beginning balance (in shares) at Dec. 31, 2021 | 2,101,795 |  |  |  |  |  |  |  | 2,101,795 |
Beginning balance at Dec. 31, 2021 | $ 704,264 |  |  | $ 3 | $ 2 | 283,982 | 438,732 | (6,667) | $ (11,788) | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  |  |  | 100,588 |  |  |  |  |  |
Exercise of stock options | 1,866 |  |  |  |  | 1,866 |  |  |  |
Stock-based compensation expense | 7,206 |  |  |  |  | 7,206 |  |  |  |
Employee stock purchase plan (in shares) |  |  |  | 16,996 |  |  |  |  |  |
Employee stock purchase plan | 948 |  |  |  |  | 948 |  |  |  |
Unrealized gain (loss) from interest rate hedges, net | 4,276 |  |  |  |  |  |  | 4,276 |  |
Foreign currency translation adjustment | (1,963) |  |  |  |  |  |  | (1,963) |  |
Accretion of tax equity financing fees | (54) |  |  |  |  |  | (54) |  |  |
Investment fund call option exercise | 238 |  |  |  |  | 238 |  |  |  |
Contributions from non-controlling interest | 15,186 |  |  |  |  |  |  |  |  | 15,186
Net income | $ 49,600 |  |  |  |  |  | 49,600 |  |  |
Ending balance (in shares) at Jun. 30, 2022 |  | 33,833,893 | 18,000,000 | 33,833,893 | 18,000,000 |  |  |  |  |
Treasury stock, ending balance (in shares) at Jun. 30, 2022 | 2,101,795 |  |  |  |  |  |  |  | 2,101,795 |
Ending balance at Jun. 30, 2022 | $ 781,567 |  |  | $ 3 | $ 2 | 294,240 | 488,278 | (4,354) | $ (11,788) | 15,186
Redeemable non-controlling interests, beginning balance at Mar. 31, 2022 | 47,438 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Distributions to redeemable non-controlling interests | (204) |  |  |  |  |  |  |  |  |
Accretion of tax equity financing fees | 27 |  |  |  |  |  |  |  |  |
Net income | 657 |  |  |  |  |  |  |  |  |
Redeemable non-controlling interests, ending balance at Jun. 30, 2022 | 47,918 |  |  |  |  |  |  |  |  |
Beginning balance (in shares) at Mar. 31, 2022 |  |  |  | 33,808,964 | 18,000,000 |  |  |  |  |
Treasury stock, beginning balance (in shares) at Mar. 31, 2022 |  |  |  |  |  |  |  |  | 2,101,795 |
Beginning balance at Mar. 31, 2022 | 736,211 |  |  | $ 3 | $ 2 | 289,459 | 456,089 | (3,889) | $ (11,788) | 6,335
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  |  |  | 7,933 |  |  |  |  |  |
Exercise of stock options | 158 |  |  |  |  | 158 |  |  |  |
Stock-based compensation expense | 3,675 |  |  |  |  | 3,675 |  |  |  |
Employee stock purchase plan (in shares) |  |  |  | 16,996 |  |  |  |  |  |
Employee stock purchase plan | 948 |  |  |  |  | 948 |  |  |  |
Unrealized gain (loss) from interest rate hedges, net | 1,565 |  |  |  |  |  |  | 1,565 |  |
Foreign currency translation adjustment | (2,030) |  |  |  |  |  |  | (2,030) |  |
Accretion of tax equity financing fees | (27) |  |  |  |  |  | (27) |  |  |
Contributions from non-controlling interest | 8,851 |  |  |  |  |  |  |  |  | 8,851
Net income | $ 32,216 |  |  |  |  |  | 32,216 |  |  |
Ending balance (in shares) at Jun. 30, 2022 |  | 33,833,893 | 18,000,000 | 33,833,893 | 18,000,000 |  |  |  |  |
Treasury stock, ending balance (in shares) at Jun. 30, 2022 | 2,101,795 |  |  |  |  |  |  |  | 2,101,795 |
Ending balance at Jun. 30, 2022 | $ 781,567 |  |  | $ 3 | $ 2 | $ 294,240 | $ 488,278 | $ (4,354) | $ (11,788) | $ 15,186

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