Secured Lines of Credit, Long-Term Debt, and Notes Due to Employees (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 3,088	$ 3,764
Discount on secured promissory notes and debt issuance costs	(110)	0
Less current portion of long-term debt	(2,857)	(2,555)
Long-term debt	121	1,209
Hannoversech Volksbank Credit line 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,120	1,880
Hannoversech Volksbank Credit line 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	383	465
Hannoversech Volksbank term loan 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	61	135
Hannoversech Volksbank term loan 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	24	81
Hannoversech Volksbank term loan 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	182	270
Ventana Medical Systems [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	0	21
Secured Promissory Note [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	500	0
Participation rights [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 818	$ 912