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Fair Value Measurements of Financial Instruments - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Details) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2021
--- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market accounts | $ 4,842 | $ 135,235 |
Marketable securities – certificates of deposit | 2,150 |  |
Marketable securities – equity securities | 348 | 5,567 |
Assets | 7,340 | 145,866 |
Liabilities | 22,088 | 21,259 |
Interest Rate Collar |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative liability | 252 |  |
Contingent equity securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 1,900 | $ 3,000
Interest Rate Swap |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 3,164 |
AAMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability |  | 5,851 |
APCMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability |  | 1,000 |
VOMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability | 17 | 17 |
DMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | 8,542 |  |
Apollo-Sun Labs Management, LLC |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | 7,802 |  |
Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market accounts | 4,842 | 135,235 |
Marketable securities – certificates of deposit | 2,150 |  |
Marketable securities – equity securities | 348 | 5,567 |
Assets | 7,340 | 140,802 |
Liabilities | 0 | 0 |
Level 1 | Interest Rate Collar |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative liability | 0 |  |
Level 1 | Contingent equity securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 0 |
Level 1 | Interest Rate Swap |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 0 |
Level 1 | AAMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability | 0 | 0 |
Level 1 | APCMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability |  | 0 |
Level 1 | VOMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability | 0 | 0 |
Level 1 | DMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | 0 | 0 |
Level 1 | Apollo-Sun Labs Management, LLC |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | 0 | 0 |
Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market accounts | 0 | 0 |
Marketable securities – certificates of deposit | 0 |  |
Marketable securities – equity securities | 0 | 0 |
Assets | 0 | 3,164 |
Liabilities | 252 | 0 |
Level 2 | Interest Rate Collar |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative liability | 252 |  |
Level 2 | Contingent equity securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 0 |
Level 2 | Interest Rate Swap |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 3,164 |
Level 2 | AAMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability | 0 | 0 |
Level 2 | APCMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability |  | 0 |
Level 2 | VOMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability | 0 | 0 |
Level 2 | DMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | 0 | 0 |
Level 2 | Apollo-Sun Labs Management, LLC |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | 0 | 0 |
Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market accounts | 0 | 0 |
Marketable securities – certificates of deposit | 0 |  |
Marketable securities – equity securities | 0 | 0 |
Assets | 0 | 1,900 |
Liabilities | 21,836 | 21,259 |
Level 3 | Interest Rate Collar |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative liability | 0 |  |
Level 3 | Contingent equity securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 1,900 |
Level 3 | Interest Rate Swap |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative asset |  | 0 |
Level 3 | AAMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability | 5,475 | 5,851 |
Level 3 | APCMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability |  | 1,000 |
Level 3 | VOMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business combination, contingent consideration, liability | 17 | 17 |
Level 3 | DMG |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | 8,542 | 8,542 |
Level 3 | Apollo-Sun Labs Management, LLC |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Remaining equity interest purchase | $ 7,802 | $ 5,849 |

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