Restricted Cash (Tables)

12 Months Ended

Dec. 31, 2019

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

Schedule Of Cash And Cash Equivalents [Table Text Block]

	2019		2018		2017		2016
Cash and cash equivalents	$	123,524	$	104,147	$	89,879	$	88,818
Restricted cash included in other current assets		353		—		—		—
Restricted cash included in other assets		19,678		20,278		21,171		21,883
Cash, cash equivalents and restricted cash	$	143,555	$	124,425	$	111,050	$	110,701