Quarterly report pursuant to Section 13 or 15(d)

Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Liabilities (Details)

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Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Liabilities (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Accounts payable $ 10,631,000 $ 6,644,000
Accrued warranty 335,000 422,000
Accrued compensation 451,000 870,000
Other current liabilities 188,000 91,000
Accounts payable and accrued expenses $ 11,605,000 $ 8,027,000