Accounts Payable and Accrued Expenses  | 
3 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2018  | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Payables and Accruals [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Accounts Payable and Accrued Liabilities Disclosure [Text Block] | 
 Note 5 Accounts Payable and Accrued Expenses  
 Accounts payable, accrued expenses and other liabilities consisted of the following (in thousands):  
  | 
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