Significant Accounting Policies - Summary of the Reconciliation of Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents at beginning of period	$ 110,082	$ 31,004
Restricted cash at beginning of period	2,657	3,475
Cash and cash equivalents and restricted cash at beginning of period	112,739	34,479
Cash and cash equivalents at end of period	148,269	117,188
Restricted cash at end of period	515	2,976
Cash and cash equivalents and restricted cash at end of period	148,784	120,164
Net increase in cash and cash equivalents and restricted cash	$ 36,045	$ 85,685