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Commitment and Contingencies	3 Months Ended
Commitment and Contingencies	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We recently received several customer inquiries regarding the performance of certain cryobiological tanks (in the BioMedical segment) manufactured at our New Prague, Minnesota facility. An initial and very preliminary investigation has determined that certain tanks manufactured at the facility during a limited certain period may need to be repaired or replaced. We have not yet been able to identify the scope of the product lines subject to potential repair or replacement or what portion of any such product lines may be impacted. As such, any additional warranty reserve related to these products is not currently reasonably estimable. We anticipate the potential warranty issue will impact only a portion of the tanks manufactured during the specific period, which in total are believed to be less than $5.0 million in sales. We will provide further disclosure on this matter after the scope of the potential issue is determinable and range of the possible additional warranty reserve expense is reasonably estimable.