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Debt (Schedule of Debt) (Details)
$ in Thousands, € in Millions
Mar. 31, 2016
USD ($)
Mar. 31, 2016
EUR (€)
Dec. 31, 2015
USD ($)
Debt Instrument      
Total debt and capital leases $ 40,269   $ 41,099
Less current portion of long-term debt and capital leases 11,177   10,934
Long-term debt and capital leases, net of current portion 29,092   30,165
Mortgage Payable - Due September 2016 | East West Bank      
Debt Instrument      
Long Term Debt 2,192   2,211
Equipment Loan - Due April 2017 | East West Bank      
Debt Instrument      
Long Term Debt 1,387   1,700
Equipment Loan Due January 2019 | East West Bank      
Debt Instrument      
Long Term Debt 4,363   4,748
Mortgage Payable - Due February 2021 | East West Bank      
Debt Instrument      
Long Term Debt 3,718   3,725
Acquisition Loan - Due April 2019 | Cathay Bank      
Debt Instrument      
Long Term Debt 18,535   19,012
Mortgage Payable - Due April 2021 | Cathay Bank      
Debt Instrument      
Long Term Debt 4,437   4,460
French Government Loan - Due March 2018 | Seine-Normandie Water Agency      
Debt Instrument      
Long Term Debt 31   46
French Government Loan - Due June 2020 | Seine-Normandie Water Agency      
Debt Instrument      
Long Term Debt 134   128
French Government Loan - Due July 2021 | Seine-Normandie Water Agency      
Debt Instrument      
Long Term Debt 340   325
Note Payable To Merck      
Debt Instrument      
Long Term Debt 4,119 € 3.6 3,942
Capital Lease Obligations      
Debt Instrument      
Total debt and capital leases $ 1,013   $ 802