Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 3,086,086	$ 5,060,015
Accounts receivable, net	1,844,332	2,380,305
Inventory	2,832,164	3,719,786
Other current assets	516,009	286,815
Total current assets	8,278,591	11,446,921
Property and equipment, net	8,454,849	8,550,401
Investments	286,725	496,575
Right of use assets, operating leases, net	241,622	246,737
Right of use assets, finance leases, net	743,591	776,439
Other amortizable intangible assets, net	97,510	100,380
Goodwill and other unamortizable intangible assets	1,532,822	1,532,822
Total assets	19,635,710	23,150,275
Current liabilities
Accounts payable and accrued liabilities	3,530,973	5,098,523
Accrued interest, current portion	17,438	28,873
Deferred revenue	1,133,411	2,917,676
Line of Credit	2,000,000	2,000,000
Notes payable - current portion, net of discount	1,942,021	1,741,571
Lease liability - operating leases, current	86,284	87,375
Lease liability - finance leases, current	145,820	146,004
Contingent liability - current portion	187,000	187,000
Total current liabilities	9,042,947	12,207,022
Accrued interest, long term portion	17,099	0
Lease liability - operating leases, non-current	155,338	159,362
Lease liability - finance leases, non-current	603,253	638,137
Contingent liability - long-term	108,600	116,600
Note payable - long term portion, net	7,516,744	6,151,345
Total liabilities	17,443,981	19,272,466
Commitments & Contingencies (see note 16)
Stockholders' equity
Common stock: $0.0001 par value; 500,000,000 shares authorized; 38,495,314 and 38,209,060 shares issued, and 35,657,734 and 35,371,480 shares outstanding at March 31, 2021 and December 31, 2020, respectively	3,846	3,817
Additional paid-in capital	37,572,917	37,415,155
Treasury stock: 2,623,171 and 2,623,171 shares outstanding at March 31, 2021 and December 31, 2020, respectively.	(1,141,370)	(1,141,370)
Accumulated deficit	(34,243,664)	(32,399,793)
Total stockholders' equity	2,191,729	3,877,809
Total liabilities and stockholders' equity	$ 19,635,710	$ 23,150,275