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Restricted Cash Restricted Cash	12 Months Ended
Restricted Cash Restricted Cash	Dec. 31, 2018
Restricted Cash [Abstract]
Restricted Assets Disclosure [Text Block]	Restricted Cash The Company has agreed to maintain $0.8 million in a money market account as collateral for an outside party that is providing certain commercial card processing services for the Company. The Company is restricted from withdrawing this balance without the prior consent of the outside party during the term of the agreement.