Summary of Significant Accounting Policies Restricted Cash (Tables)

3 Months Ended

Mar. 31, 2019

Cash and Cash Equivalents [Abstract]

Restrictions on Cash and Cash Equivalents [Table Text Block]

Cash, cash equivalents and restricted cash. The following table provides a reconciliation of cash and cash equivalents and restricted cash reported on the condensed consolidated balance sheets at March 31, 2019 and 2018 and December 31, 2018 and 2017, which sum to the total of cash, cash equivalents and restricted cash in the consolidated statements of cash flows:

	March 31, 2019		December 31, 2018		March 31, 2018		December 31, 2017
	(in thousands)
Cash and cash equivalents	$	1,112	$	1,398	$	45,923	$	180,675
Restricted cash	8,001		8,001		8,001		9,250
Cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows	$	9,113	$	9,399	$	53,924	$	189,925

Restricted cash is included in other assets on the condensed consolidated balance sheets.