5. Property and Equipment (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Property and equipment, gross	$ 3,672,580	$ 3,227,297
Accumulated depreciation	(2,636,267)	(2,377,404)
Property and equipment, net	1,036,313	849,893
Computers, Software and Office Equipment [Member]
Property and equipment, gross	1,937,987	1,792,499
Accumulated depreciation	(1,508,104)	(1,319,388)
Property and equipment, net	429,883	473,111
Machinery and Equipment [Member]
Property and equipment, gross	167,731	95,356
Accumulated depreciation	(99,900)	(88,342)
Property and equipment, net	67,831	7,014
Vehicles [Member]
Property and equipment, gross	153,927	159,431
Accumulated depreciation	(120,728)	(110,098)
Property and equipment, net	33,199	49,333
Furniture and Fixtures [Member]
Property and equipment, gross	381,248	305,855
Accumulated depreciation	(284,410)	(273,768)
Property and equipment, net	96,838	32,087
Leasehold Improvements [Member]
Property and equipment, gross	1,031,687	654,309
Accumulated depreciation	(623,125)	(585,808)
Property and equipment, net	408,562	68,501
Construction in Progress [Member]
Property and equipment, gross	0	219,847
Accumulated depreciation	0	0
Property and equipment, net	$ 0	$ 219,847

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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