|12 Months Ended|
Dec. 31, 2017
|Debt Instruments [Abstract]|
|Schedule of Debt [Table Text Block]||
Debt consists of the following (in thousands):
Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.
No definition available.