Long-term Debts and Lines of Credit (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 2,758	$ 3,764
Hannoversech Volksbank Credit line 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,163	1,880
Hannoversech Volksbank Credit line 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	384	465
Hannoversech Volksbank term loan 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	93	135
Hannoversech Volksbank term loan 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	49	81
Hannoversech Volksbank term loan 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	216	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 rights
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 832	$ 912