Restricted Cash (Tables)

12 Months Ended

Dec. 31, 2018

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

Schedule Of Cash And Cash Equivalents [Table Text Block]

	2018		2017		2016		2015
Cash and cash equivalents	$	104,147	$	89,879	$	88,818	$	81,053
Restricted cash included in other assets		20,278		21,171		21,883		22,874
Cash, cash equivalents and restricted cash	$	124,425	$	111,050	$	110,701	$	103,927