CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 14,350,953	$ 23,066,301
Accounts receivable, net of allowance for doubtful accounts of $354,528 and $296,793 at March 31, 2021 and December 31, 2020, respectively	2,413,552	3,377,387
Inventories, net	14,690,627	12,516,402
Prepaid expenses and other current assets	812,638	778,683
TOTAL CURRENT ASSETS	32,267,770	39,738,773
FIXED ASSETS:
Property, plant and equipment, net	9,582,872	8,688,403
Finance lease right-of-use asset, net	217,376	233,134
OTHER ASSETS:
Operating lease right-of-use assets, net	5,904,299	6,112,632
Intangible assets, net	3,377,003	3,645,986
Goodwill	5,689,315	5,963,744
Deposits and other assets	374,862	509,342
TOTAL ASSETS	57,413,497	64,892,014
CURRENT LIABILITIES:
Accounts payable and accrued liabilities	8,396,994	10,042,790
Deferred revenue	404,486	1,606,997
Operating lease liabilities	572,478	642,460
Finance lease liabilities	60,064	58,877
TOTAL CURRENT LIABILITIES	9,434,022	12,351,124
OTHER LIABILITIES:
Long-term operating lease liabilities	6,197,527	6,327,143
Long-term finance lease liabilities	169,765	185,239
Long-term debt, net	18,327,037	18,182,158
Deferred tax liability	0	69,941
TOTAL LIABILITIES	34,128,351	37,115,605
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock - 10,000,000 shares authorized; none outstanding	0	0
Common stock - $0.01 par value; 100,000,000 shares authorized; 20,285,695 shares and 20,223,498 shares issued at March 31, 2021 and December 31, 2020, respectively	202,857	202,235
Additional paid-in capital	125,425,514	124,961,514
Accumulated deficit	(101,606,494)	(97,106,331)
Treasury Stock, 41,141 shares at cost, at March 31, 2021 and December 31, 2020	(190,093)	(190,093)
Accumulated other comprehensive (loss) income	(546,638)	(90,916)
TOTAL STOCKHOLDERS' EQUITY	23,285,146	27,776,409
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 57,413,497	$ 64,892,014