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Financial Instruments and Fair Value
3 Months Ended
Mar. 31, 2018
Fair Value Disclosures [Abstract]  
Fair Value Disclosures [Text Block]
(4)
Financial Instruments and Fair Value
 
The carrying values of cash, other current assets, accounts payable, accrued expenses and other current liabilities in the Company’s condensed consolidated balance sheets approximated their fair values at March 31, 2018 and December 31, 2017 due to their short-term nature.