Secured Lines of Credit, Long-term Debt, and Notes Due to Employees (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 3,258,000	$ 3,274,000
Less current portion of long-term debt	(3,226,000)	(3,214,000)
Long-term debt	32,000	60,000
Hannoversech Volksbank Credit line 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,447,000	1,321,000
Hannoversech Volksbank Credit line 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	426,000	397,000
Hannoversech Volksbank term loan 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	95,000	117,000
Secured Promissory Note [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	433,000	650,000
DZ Equity Partners Participation rights [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 857,000	$ 789,000