Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 1,691	$ 435
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale of long-term assets	4,203	0
Proceeds from investment	13	894
Payments for property and deferred development costs	(94)	(68)
NET CASH PROVIDED BY INVESTING ACTIVITIES	4,122	826
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from long-term debt	600	947
Payments on long-term debt	(800)	(1,982)
Debt and common stock issuance costs and other	(477)	(569)
NET CASH USED IN FINANCING ACTIVITIES	(677)	(1,604)
NET INCREASE (DECREASE) IN CASH	5,136	(343)
CASH AT BEGINNING OF PERIOD	869	683
CASH AT END OF PERIOD	6,005	340
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest:	$ 8	$ 19

Amount of cash outflow for property and deferred development costs.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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