Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Summary of Significant Accounting Policies [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

	September 30, 2019		December 31, 2018
	(In thousands)
Cash and cash equivalents	$	194,654	$	198,850
Restricted cash(1):
Included in Other current assets	3,890		7,007
Included in Deferred charges and other assets	1,749		1,727
Total restricted cash	5,639		8,734
Total cash, cash equivalents, and restricted cash	$	200,293	$	207,584