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Consolidated Statements of Cash Flows - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash flows from operating activities:    
Net loss $ (3,738,945) $ (10,684,641)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Stock-based compensation 227,250 520,801
Provision for bad debts 77,498 (1,472,165)
Depreciation and amortization 2,515,900 2,951,901
Impairment loss 1,857,226 0
Gain on disposition 0 (191,988)
Amortization of loan fees 380,211 411,363
Loss on extinguishment of long-term debt 0 4,996,731
Deferred income taxes (5,849,318) (2,602,886)
Equity in earnings of unconsolidated affiliates 23,344 30,105
Change in operating assets and liabilities:    
Accounts receivable 11,188,519 12,180,235
Prepaid expenses 213,359 (1,399,765)
Other assets 570,082 1,286,882
Accounts payable 361,375 (5,814,875)
Other liabilities (7,069,648) 1,870,041
Other operating activities (21,479) 272,268
Net cash provided by operating activities 735,374 2,354,007
Cash flows from investing activities:    
Capital expenditures (1,375,775) (1,029,268)
Proceeds from dispositions 0 362,500
Net cash used in investing activities (1,375,775) (666,768)
Cash flows from financing activities:    
Issuance of debt 0 310,000,000
Payments on debt 0 (268,500,000)
Payment of debt issuance costs 0 (7,604,215)
Reduction of finance lease liabilities (1,945) (17,543)
Purchase of treasury stock (29,599) (114,308)
Net cash provided by (used in) financing activities (31,544) 33,763,934
Net increase in cash and cash equivalents (671,945) 35,451,173
Cash and cash equivalents at beginning of period 51,378,642 20,759,432
Cash and cash equivalents at end of period 50,706,697 56,210,605
Cash paid for interest 12,937,576 1,836,787
Cash paid for income taxes 61,000 1,374,403
Supplemental disclosure of non-cash investing and financing activities:    
Acquisition of noncontrolling interest 0 4,490,130
Extinguishment of trade sales payable 0 934,500
Class A Common Stock [Member]    
Supplemental disclosure of non-cash investing and financing activities:    
Class A common stock returned to treasury stock $ 0 $ 670,594