Summary of Significant Accounting Policies Cash, Cash Equivalents, and Restricted Cash (Tables)

3 Months Ended

Mar. 31, 2018

Cash and Cash Equivalents [Line Items]

Schedule of Cash and Cash Equivalents [Table Text Block]

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

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