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Debt (Schedule of Debt) (Details) $ in Thousands, € in Millions	Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Dec. 31, 2016 USD ($)
Debt Instrument
Equipment under Capital Leases	$ 1,564		$ 1,614
Total debt and capital leases	36,411		37,722
Less current portion of long-term debt and capital leases	5,263		5,366
Long-term debt and capital leases, net of current portion	31,148		32,356
Equipment Loan - Due April 2017 \| East West Bank
Debt Instrument
Long Term Debt	109		433
Equipment Loan - Due January 2019 \| East West Bank
Debt Instrument
Long Term Debt	2,823		3,208
Mortgage Payable - Due February 2021 \| East West Bank
Debt Instrument
Long Term Debt	3,640		3,660
Equipment Credit Line Due September 2021 \| East West Bank
Debt Instrument
Long Term Debt	2,882		2,882
Mortgage Payable - Due October 2026 \| East West Bank
Debt Instrument
Long Term Debt	3,568		3,582
Acquisition Loan - Due April 2019 \| Cathay Bank
Debt Instrument
Long Term Debt	16,580		17,079
Mortgage Payable - Due April 2021 \| Cathay Bank
Debt Instrument
Long Term Debt	4,342		4,367
French Government Loan - Due March 2018 \| Seine-Normandie Water Agency
Debt Instrument
Long Term Debt	15		30
French Government Loan - Due June 2020 \| Seine-Normandie Water Agency
Debt Instrument
Long Term Debt	101		99
French Government Loan - Due July 2021 \| Seine-Normandie Water Agency
Debt Instrument
Long Term Debt	268		262
Note Payable To Merck
Debt Instrument
Long Term Debt	$ 519	€ 0.5	$ 506