|3 Months Ended|
Mar. 31, 2018
|Accrued Liabilities [Abstract]|
|Accounts Payable and Accrued Liabilities Disclosure [Text Block]||
4. Accrued Expenses
Accrued expenses consist of the following:
The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.
Reference 1: http://www.xbrl.org/2003/role/presentationRef