Secured Lines of Credit, Long-term Debt, and Notes Due to Employees (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 3,539	$ 3,088
Discount on secured promissory notes and debt issuance costs	(31)	(110)
Less current portion of long-term debt	(3,415)	(2,857)
Long-term debt	93	121
Hannoversech Volksbank Credit line 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,438	1,120
Hannoversech Volksbank Credit line 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	4,333	383
Hannoversech Volksbank term loan 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	31	61
Hannoversech Volksbank term loan 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross		24
Hannoversech Volksbank term loan 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	154	182
Secured Promissory Note [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	650	500
DZ Equity Partners Participation rights [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 833	$ 818