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Consolidated Statements of Cash Flows - Reconciliation - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Cash Flows [Abstract]        
Cash and cash equivalents $ 140,263 $ 15,813 $ 74,076  
Restricted cash included in other assets 436 434 430  
Total cash, cash equivalents and restricted cash $ 140,699 $ 16,247 $ 74,506 $ 16,536