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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
Net cash provided by operating activities - continuing operations | $ 13,874,865 | $ 1,662,873
Net cash used in operating activities - discontinued operations | (661,698) | (603,296)
Net cash provided by operating activities | 13,213,167 | 1,059,577
Cash flows from investing activities |  |
Purchase of certificate of deposit | (2,518,493) |
Maturity of certificate of deposit | 2,500,000 |
Additions to property, plant and equipment and construction in progress | (1,796,196) | (497,296)
Proceeds from asset dispositions | 24,360 | 44,860
Net cash used in investing activities - continuing operations | (1,790,329) | (452,436)
Cash flows from financing activities |  |
Dividends paid to common shareholders | (2,595,547) | (2,584,691)
Dividends paid to preferred shareholders | (4,868) | (5,200)
Dividends paid to non-controlling interests | (464,200) | (649,880)
Repurchase of redeemable preferred stock |  | (14,863)
Payments made on note payable | (31,144) | (23,195)
Proceeds received from exercise of stock options | 2,696 | 1,709
Net cash used in financing activities | (3,093,063) | (3,276,120)
Net increase (decrease) in cash and cash equivalents | 8,329,775 | (2,668,979)
Cash and cash equivalents at beginning of period | 40,358,059 | 43,794,150
Cash and cash equivalents at beginning of period - discontinued operations | 750,048 | 154,130
Less: cash and cash equivalents at end of period - discontinued operations | (344,720) | (69,158)
Cash and cash equivalents at end of period | 49,093,162 | 41,210,143
Non-cash transactions: |  |
Conversion (on a one-to-one basis) of 0 and 1,111, respectively, shares of redeemable preferred stock to common stock |  | 667
Dividends declared but not paid | 1,302,520 | 1,295,377
Transfers from (to) inventory to (from) property, plant and equipment and construction in progress | 185,013 | 148,138
Transfers from construction in progress to property, plant and equipment | 240,401 | 166,335
Right-of-use assets obtained in exchange for new operating lease liabilities |  | 1,852,608
Purchase of equipment through issuance of long-term debt | 68,422 | 58,220
Redeemable preferred stock [Member] |  |
Non-cash transactions: |  |
Stock Issued | 133,197 | 102,203
Common stock [Member] |  |
Non-cash transactions: |  |
Stock Issued | $ 521,016 | $ 745,468

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