Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (663,946)	$ (3,722,323)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Net income in equity method investment		(53,173)
Depreciation and amortization	267,719	241,436
Loss on disposal of property, plant and equipment	3,893
Loss on adjustment of investment		946,844
Accretion of obligation for lease disposal costs	29,544	9,450
Accretion of beneficial conversion feature	129,373	5,112
Equity based compensation	188,476	163,873
Noncash interest expense	25,785	173,534
Changes in operating assets and liabilities:
Accounts receivable	(185,344)	539,759
Prepaids and other current assets	29,585	391,784
Inventories	(814,216)	(475,273)
Unearned revenues	413,933	404,340
Accounts payable and accrued liabilities	672,357	908,893
Net cash provided by (used in) operating activities	97,159	(465,744)
Cash flows from investing activities:
Cash acquired through consolidation accounting		81,184
Dividends received from equity method investment		109,111
Purchase of property, plant and equipment	(86,320)	(110,115)
Net cash (used in) provided by investing activities	(86,320)	80,180
Cash flows from financing activities:
Proceeds from sale of stock	76,697	15,447
Proceeds from issuance of debt, related party	120,000	60,000
Cash contributed by non-controlling interest		32,286
Proceeds from sale of preferred stock		2,860,000
Principal payments on notes payable	(7,437)	(2,096,952)
Net cash provided by financing activities	189,260	870,781
Net change in cash and cash equivalents	200,099	485,217
Cash and cash equivalents at beginning of year	1,250,368	765,151
Cash and cash equivalents at end of year	1,450,467	1,250,368
Cash and cash equivalents	828,039	409,338
Restricted cash included in current assets		387,455
Restricted cash included in long-term assets	622,428	453,575
Total cash, cash equivalents and restricted cash shown in statement of cash flows	1,450,467	1,250,368
Supplemental disclosure of cash flow activities:
Cash paid for interest	55,359	354,206
Supplemental disclosure of noncash financing and investing transactions:
Decrease in accrued interest and increase in equity for conversion of preferred dividends to stock	$ 205,980
Decrease in preferred stock and increase in equity for amounts allocated to warrants issued with preferred stock		641,673
Decrease in accrued interest and increase in preferred stock for conversion of debentures		13,100
Decrease in debt and increase in preferred stock for conversion of debentures		1,339,900
Assets reported through consolidation:
Cash		81,184
Accounts receivable		400,509
Goodwill		1,376,584
Patents and other intangible assets		444,126
Account payable		352,575
Equity		$ 1,949,828