Long-term Debts and Lines of Credit (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 2,745	$ 3,764
Hannoversche Volksbank credit line 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,169	1,880
Hannoversche Volksbank credit line 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	399	465
Hannoversche Volksbank term loan 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	62	135
Hannoversche Volksbank term loan 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	50	81
Hannoversche Volksbank term loan 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	203	270
Ventana Medical Systems, Inc. Promissory Note [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	21	21
Denture DZ Equity Partners Participation right [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 841	$ 912