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Debt (Tables)
3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Schedule of long-term debt outstanding
Outstanding long-term debt was as follows:
March 31, 2021December 31, 2020
Senior long-term debt:
Senior Secured Credit Facility (stated maturity date October 2024)$— $— 
Senior Notes (stated maturity date May 2025)798,725 798,725 
Total senior long-term debt798,725 798,725 
Other debt:
Lines of credit23,016 59,014 
Notes payable and other debt129,480 138,630 
Total senior and other debt951,221 996,369 
Finance lease obligations and sale-leaseback financings50,357 52,639 
Total long-term debt and finance leases1,001,578 1,049,008 
Less: total unamortized deferred financing costs50,592 53,292 
Less: current portion of long-term debt and finance leases62,805 95,818 
Long-term debt and finance leases, less current portion$888,181 $899,898 
Schedule estimated fair values of debt The estimated fair value of our debt was as follows:
March 31, 2021December 31, 2020
Carrying amountEstimated fair valueCarrying amountEstimated fair value
Total senior and other debt$951,221 $988,162 $996,369 $1,043,294