Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses and Other Liabilities (Details)

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Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses and Other Liabilities (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Accrued Liabilities And Other Liabilities [Abstract]    
Accrued compensation and related liabilities $ 1,029,577 $ 1,183,653
Deferred revenue and customer deposits 971,138 1,135,470
Warranty reserve 403,802 416,313
Other accrued expenses 1,164,498 1,195,282
Accrued expenses and other liabilities $ 3,569,015 $ 3,930,718