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Cash and Cash Equivalents (Tables)
6 Months Ended
Jun. 30, 2021
Cash and Cash Equivalents [Abstract]  
Schedule of Cash and Cash Equivalents
Cash and cash equivalents consists of the following components (dollars in thousands):
 June 30,
2021
December 31,
2020
Cash and cash equivalents - unrestricted$106,250 $62,790 
Cash - restricted (a)
11,160 11,160 
Total cash and cash equivalents$117,410 $73,950 
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(a)     Includes cash placed on deposit with a financial institution to be held as cash collateral for the Company's outstanding letters of credit.