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Fair Value Measurements
12 Months Ended
Dec. 31, 2016
Fair Value Measurements [Abstract]  
Fair Value Disclosures [Text Block]
4.
Fair Value Measurements
 
The consolidated financial statements include financial instruments for which the fair market value may differ from amounts reflected on a historical basis.
  
Financial Assets and Financial Liabilities Carried at Other Than Fair Value
 
The Company’s financial instruments include cash equivalents, accounts receivable, short and long-term debt (except for contingent promissory notes) and other financial instruments associated with the issuance of the common stock. The carrying values of cash equivalents and accounts receivable approximate their fair value because of the short maturity of these instruments and past evidence indicates that these instruments settle for their carrying value. The carrying amounts of the Company’s bank borrowings under its credit facility approximate fair value because the interest rates reflect current market rates.