Selected Balance Sheet Accounts (Details 3) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accrued Expenses and Other Current Liabilities:
Accrued employee-related benefits	$ 2,071	$ 1,004
Other accrued expenses	507	1,264
Amounts due to customers	168	355
Other current liabilities	296	696
Total other accrued expenses and other current liabilities	969	2,315
Total accrued expenses and other current liabilities	$ 3,040	$ 3,319