Fair Value Measurements (Details) - Recurring - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Cash and cash equivalents	$ 319,032	$ 140,882
Restricted cash and cash equivalents	5,354	14,561
Derivative Asset	0	0
Total	324,386	155,443
Significant Other Observable Inputs (Level 2)
Assets:
Cash and cash equivalents	0	0
Restricted cash and cash equivalents	0	0
Derivative Asset	2	115
Total	2	115
Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	0	0
Restricted cash and cash equivalents	0	0
Derivative Asset	0	0
Total	0	0
Estimate of Fair Value Measurement
Assets:
Cash and cash equivalents	319,032	140,882
Restricted cash and cash equivalents	5,354	14,561
Derivative Asset	2	115
Total	$ 324,388	$ 155,558