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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Net cash provided by (used in) operating activities - continuing operations $ 8,552,481 $ (2,422,527)
Net cash used in operating activities - discontinued operations 0 317,373
Net cash provided by (used in) operating activities 8,552,481 (2,105,154)
Cash flows from investing activities    
Additions to property, plant and equipment and construction in progress (1,816,397) (8,727,473)
Proceeds from asset dispositions 443,500 11,190
Proceeds from sale of CW-Belize, net of cash provided 6,706,234 0
Collections on loans receivable 734,980 688,888
Payments for land and rights of way held for development 0 (25,152)
Net cash provided by (used in) investing activities 6,068,317 (8,052,547)
Cash flows from financing activities    
Dividends paid to common shareholders (2,553,942) (2,543,807)
Dividends paid to preferred shareholders (2,958) (2,846)
Issuance (repurchase) of redeemable preferred stock (24,096) 5,735
Proceeds received from exercise of stock options 7,123 0
Payments on note payable to related party 0 (392,000)
Net cash used in financing activities (2,573,873) (2,932,918)
Net increase (decrease) in cash and cash equivalents and restricted cash 12,046,925 (13,090,619)
Cash and cash equivalents and restricted cash at beginning of period 31,337,477 45,482,966
Cash and cash equivalents and restricted cash at end of period 43,384,402 32,392,347
Cash and cash equivalents at end of period 41,878,723 32,392,347
Restricted cash at end of period 1,505,679 0
Cash and cash equivalents and restricted cash at end of period 43,384,402 32,392,347
Interest paid in cash 1,482 6,539
Non-cash investing and financing activities    
Conversion (on a one-to-one basis) of 0 and 454, respectively, shares of redeemable preferred stock to common stock 0 272
Dividends declared but not paid 1,280,139 1,275,030
Transfers from inventory to property, plant and equipment and construction in progress 223,136 192,748
Transfers from construction in progress to property, plant and equipment 6,916,301 354,771
Transfers from other assets to construction in progress 0 1,253,299
Right-of-use assets obtained in exchange for new operating lease liabilities 4,850,902 0
Preferred Stock [Member]    
Non-cash investing and financing activities    
Stock Issued 100,935 96,317
Common Stock [Member]    
Non-cash investing and financing activities    
Stock Issued $ 447,416 $ 441,162