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Consolidated Statement of Cash Flow (Unaudited) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Cash Flows from Operating Activities      
Net Income $ 3,143,417 $ 2,075,570 $ 5,839,387
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 724,641 623,465  
Unrealized gain on investments in equity securities (233,644)  
Forgiveness of PPP loan (1,453,837)  
Non-cash share-based compensation expense 329,628 36,466  
Changes in assets and liabilities:      
Decrease (Increase) in accounts receivable (967,662) 2,056,246  
Decrease (Increase) in inventories (319,455) (339,843)  
Decrease (Increase) in contract assets (165,696) (1,775,539)  
Decrease (Increase) in prepaid expenses & other assets 268,510 (58,099)  
Increase (Decrease) in accounts payable (633,307) 2,305,197  
Increase (Decrease) in accrued expenses 912,024 1,239,831  
Increase (Decrease) in unearned revenue (142,261) (546,965)  
Total adjustments (1,681,059) 3,540,759  
Net Cash Provided by Operating Activities 1,462,358 5,616,329  
Cash Flows from Investing Activities      
Cash paid for business acquisitions (7,081,277) (9,400,000)  
Sale of equity securities 123,069  
Capital expenditures (827,184) (122,720)  
Net Cash (Used in) Investing Activities (7,785,392) (9,522,720)  
Cash Flows from Financing Activities      
Payments on notes (562,500) (684,720)  
Payments on bank debt (1,352,833) (3,093,747)  
Borrowings on bank debt 6,926,301 10,870,893  
Share repurchase (41,033)  
Net Cash Provided by Financing Activities 4,969,935 7,092,426  
Net Increase (decrease) in cash and cash equivalents (1,353,099) 3,186,035  
Cash and cash equivalents at beginning of period 6,194,276 2,232,499 2,232,499
Cash and cash equivalents at end of period 4,841,177 5,418,534 $ 6,194,276
Supplemental disclosures of cash flow information      
Interest Paid 153,995 255,742  
Common Class A [Member]      
Supplemental disclosures of noncash financing activity      
Supplemental disclosures of noncash investing activity 1,059,000  
Paycheck Protection Program CARES Act [Member]      
Supplemental disclosures of noncash financing activity      
Forgiveness of PPP loan $ 1,453,837