Quarterly report pursuant to Section 13 or 15(d)

Nature of Business and Summary of Significant Accounting Policies, General and Administrative Expenses (Details)

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Nature of Business and Summary of Significant Accounting Policies, General and Administrative Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Shipping Cost [Abstract]        
Shipping costs $ 600 $ 600 $ 1,800 $ 1,900
Net sales 3,932 3,981 11,567 11,045
Shipping Cost [Member]        
Shipping Cost [Abstract]        
Net sales $ 200 $ 200 $ 500 $ 700