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Restricted Cash Restricted Cash
9 Months Ended
Sep. 30, 2017
Restricted Cash [Abstract]  
Cash and Cash Equivalents 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.