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LEASES (Tables)
 12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Schedule of Lease Expense, Remaining Lease Terms, Discount Rate and Other Information
Information regarding lease expense, remaining lease term, discount rate, and other select lease information is presented below as of December 31, 2020 and 2019, and for the twelve months ended December 31, 2020 and 2019 (dollars in thousands):
Twelve Months Ended December 31,
Lease Costs20202019
Operating lease expense$86,451 $68,489 
Short-term lease expense15,130 11,440 
Total lease expense$101,581 $79,929 

Twelve Months Ended December 31,
Other Lease Information20202019
Operating cash outflows from operating leases$74,177 $66,489 
Right-of-use lease assets obtained in exchange for new lease liabilities(1)
95,005 101,966 

As of December 31,
Lease Term and Discount Rate20202019
Weighted average remaining lease term (in years)(1)
6.87.8
Weighted average discount rate3.2 %3.4 %
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(1) The weighted average remaining lease term is significantly impacted by a 15-year lease related to office space in Chicago, IL, that commenced in 2018. Excluding this lease, the weighted average remaining lease term of our agreements is 4.7 years.
Schedule of Maturity of Lease Liabilities
The maturity of lease liabilities as of December 31, 2020, were as follows (in thousands):
Maturity of Lease LiabilitiesOperating Leases
2021$75,624 
202269,980 
202357,597 
202439,547 
202529,935 
Thereafter104,455 
Total lease payments377,138 
Less: Interest(42,392)
Present value of lease liabilities
$334,746