Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2018

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]

Schedule Of Cash And Cash Equivalents [Table Text Block]

	September 30,				December 31,
	2018		2017		2017		2016
Cash and cash equivalents	$	99,810	$	109,088	$	89,879	$	88,818
Restricted cash included in other assets		20,594		21,376		21,171		21,883
Cash, cash equivalents and restricted cash	$	120,404	$	130,464	$	111,050	$	110,701