Debt and Line of Credit (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 4,237	$ 4,310
Hannoversech Volksbank Credit line 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	471	759
Hannoversech Volksbank Credit line 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,587	1,333
Hannoversech Volksbank Credit line 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	488	444
Hannoversech Volksbank term loan 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	175	211
Hannoversech Volksbank term loan 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	109	138
Hannoversech Volksbank term loan 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	354	393
Participation rights [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,032	1,032
Ventana Medical Systems [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 21	$ 0