XML 154 R126.htm IDEA: XBRL DOCUMENT v3.8.0.1
Supplemental Cashflow Information (Schedule of Changes in Liabilities Arising from Financing Activities) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Long-term borrowings [member]    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Liabilities arising from financing activities at beginning of period $ 39,768 $ 39,486
Amortization of transaction costs 103 282
Liabilities arising from financing activities at end of period 39,871 39,768
Lease liabilities [member]    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Liabilities arising from financing activities at beginning of period 3,034 1,884
Additions   2,362
Principal payments (2,128) (1,212)
Liabilities arising from financing activities at end of period 906 3,034
Assets held to hedge liabilities arising from financing activities [member]    
Disclosure of reconciliation of liabilities arising from financing activities [line items]    
Liabilities arising from financing activities at beginning of period 253 351
Interest accrued (25) (14)
Change in fair value (368) (84)
Liabilities arising from financing activities at end of period $ (140) $ 253