CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 23,066,301	$ 18,271,352
Accounts receivable, net of allowance for doubtful accounts of $296,793 and $62,000 at December 31, 2020 and 2019, respectively	3,377,387	3,661,325
Inventories, net	12,516,402	9,598,030
Prepaid expenses and other current assets	778,683	693,013
TOTAL CURRENT ASSETS	39,738,773	32,223,720
FIXED ASSETS:
Property, plant and equipment, net	8,688,403	5,933,569
Finance lease right-of-use asset, net	233,134	210,350
OTHER ASSETS:
Operating right-of-use assets, net	6,112,632	7,030,744
Intangible assets, net	3,645,986	3,914,352
Goodwill	5,963,744	5,872,690
Deposits and other assets	509,342	543,539
TOTAL ASSETS	64,892,014	55,728,964
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	10,042,790	5,526,243
Deferred revenue	1,606,997	125,000
Notes Payable	0	180,249
Operating lease liabilities	642,460	568,294
Finance lease liabilities	58,877	41,894
TOTAL CURRENT LIABILITIES	12,351,124	6,441,680
OTHER LIABILITIES:
Long-term operating lease liabilities	6,327,143	6,969,603
Long-term finance lease liabilities	185,239	171,953
Long-term debt, less current portion, net	18,182,158	17,644,149
Deferred tax liability	69,941	466,326
TOTAL LIABILITIES	37,115,605	31,693,711
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS' EQUITY:
Preferred stock - 10,000,000 shares authorized; none outstanding	0	0
Common stock - $.01 par value; 100,000,000 shares authorized, 20,223,498 and 17,733,617 shares issued and outstanding at December 31, 2020 and 2019, respectively	202,235	177,335
Additional paid-in capital	124,961,514	95,433,077
Accumulated deficit	(97,106,331)	(71,585,003)
Treasury stock - 41,141 and 0 shares at cost, at December 31, 2020 and 2019, respectively	(190,093)	0
Accumulated other comprehensive income	(90,916)	9,844
TOTAL STOCKHOLDERS' EQUITY	27,776,409	24,035,253
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 64,892,014	$ 55,728,964