Leases Leases (Tables)

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Lease, Cost [Table Text Block]

The components of lease expense are as follows (dollars in thousands):

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Operating lease cost	$	2,140	$	2,020	$	4,280	$	3,670
Short-term, variable and other lease costs	430		270		860		580
Total lease cost	$	2,570	$	2,290	$	5,140	$	4,250

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Maturities of lease liabilities are as follows (dollars in thousands):

Year ended December 31,	Operating Leases(a)
2021 (excluding the six months ended June 30, 2021)	$	3,940
2022	7,720
2023	6,880
2024	6,000
2025	4,850
Thereafter	15,800
Total lease payments	45,190
Less: Imputed interest	(5,770)
Present value of lease liabilities	$	39,420

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(a)     The maturity table excludes cash flows associated with exited lease facilities. Liabilities for exited lease facilities are included in accrued liabilities and other long-term liabilities in the accompanying consolidated balance sheet.