|12 Months Ended|
Dec. 31, 2017
|Accrued Liabilities, Current [Abstract]|
|Accounts Payable and Accrued Liabilities Disclosure [Text Block]||
Accrued expenses and other current liabilities consist of the following (in thousands):
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