Other Non-Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Other Liabilities Noncurrent [Abstract]

Schedule of Other Assets and Other Liabilities [Table Text Block]

	2017		2016
Restricted insurance settlement	$	21,171	$	21,883
Non-current income taxes payable		15,825		—
Uncertain tax positions (includes interest and penalties)		7,970		7,933
Deferred and other long-term compensation		5,905		5,550
Other		625		520
Total other non-current liabilities	$	51,496	$	35,886