Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lease, Cost [Table Text Block]

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

	Year ended December 31, 2020		Year ended December 31, 2019
Operating lease cost	$	7,870	6,380
Short-term, variable and other lease costs	1,540		1,140
Total lease cost	$	9,410	$	7,520

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	$	8,070
2022	7,250
2023	6,340
2024	5,120
2025	4,400
Thereafter	12,700
Total lease payments	43,880
Less: Imputed interest	(5,530)
Present value of lease liabilities	$	38,350

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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.