Other Assets (Tables)

12 Months Ended

Dec. 31, 2016

Other Assets [Abstract]

Schedule of Other Assets, Noncurrent [Table Text Block]

	2016		2015
Restricted insurance settlement	$	21,883	$	22,874
Uncertain tax positions		3,892		6,054
Supplemental retirement income program		1,410		1,336
Other		1,567		1,954
Total other assets	$	28,752	$	32,218