Debt and Line of Credit (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 4,369,000	$ 4,310,000
Hannoversech Volksbank Credit line 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	486,000	759,000
Hannoversech Volksbank Credit line 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,693,000	1,333,000
Hannoversech Volksbank Credit line 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	499,000	444,000
Hannoversech Volksbank term loan 1 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	175,000	211,000
Hannoversech Volksbank term loan 2 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	109,000	138,000
Hannoversech Volksbank term loan 3 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	354,000	393,000
Participation rights [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	1,032,000	1,032,000
Ventana Medical Systems [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Gross	$ 21,000	$ 0