Accrued Expenses - Summary of Accrued Expense (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Accrued expenses	$ 3,371,000	$ 2,085,000
Accrued interest	73,000	199,000
Accrued payroll	1,338,000	1,253,000
Accrued vacation and sick pay	647,000	496,000
Accrued shipping expenses	746,000	433,000
Accrued legal fees	56,000	192,000
Deferred rent liability	353,000	301,000
Total accrued expenses	$ 6,584,000	$ 4,959,000