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Related Party Transactions
12 Months Ended
Dec. 31, 2018
Related Party Transactions [Abstract]  
Related Party Transactions Disclosure [Text Block]

10. Related Party Transactions

As part of the acquisitions of Multi Channel Systems MCS GmbH (MCS) and Triangle BioSystems, Inc. (TBSI) in 2014, the Company signed lease agreements with the former owners of the acquired companies. The principals of such former owners of MCS and TBSI were employees of the Company as of December 31, 2018 and 2017. Pursuant to a lease agreement, the Company made rent payments of approximately $0.3 million and $0.2 million to the former owners of MCS during the years ended December 31, 2018 and 2017, respectively. The Company made rent payments of approximately $44 thousand and $42 thousand to the former owner of TBSI during the years ended December 31, 2018 and 2017, respectively.