Leases (Tables)

6 Months Ended

Jun. 30, 2019

Lease Costs and Supplemental Cash Flow Information Related to Leases

The following table presents the lease costs and supplemental cash flow information related to our operating leases:



(dollars in thousands)	Three months ended June 30, 2019		Six months ended June 30, 2019
Operating lease costs	$	3,972	$	7,933
Short-term lease costs⁽¹⁾	938		1,818
Total lease costs	$	4,910	$	9,751
⁽¹⁾Includes variable lease costs which are immaterial.

Cash paid for operating leases included in the measurement of lease liabilities			$	7,847
ROU assets obtained in exchange for lease liabilities			$	73,041

Reconciliation of Undiscounted Cash Flows to the Operating Lease Liability

The following table reconciles the undiscounted cash flows to the operating lease liabilities recorded on the balance sheet:



(dollars in thousands)	June 30, 2019
2019 (remainder of year)	$	7,850
2020	14,432
2021	10,966
2022	9,742
2023	9,096
2024 and thereafter	23,884
Total minimum lease payments	75,970
Less: interest	(9,420		)
Present value of future minimum lease payments	66,550
Less: lease liabilities (current portion)	(12,800		)
Noncurrent lease liabilities	$	53,750

Future Minimum Rental Payments Under Operating Leases

As presented in our 2018 Form 10-K, the future minimum rental commitments under ASC 840 for non-cancelable operating leases as of December 31, 2018, was as follows (dollars in thousands):



2019	2020	2021	2022	2023	2024 and thereafter
$15,407	$13,787	$10,339	$9,143	$8,551	$20,755