Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
ROU assets	$ 27,539	$ 31,411		$ 31,724
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Current lease liability	$ 11,707	$ 10,751
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent		us-gaap:AccruedLiabilitiesCurrent
Long-term lease liability	$ 16,304	$ 21,374
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent		us-gaap:OtherLiabilitiesNoncurrent
Lease Liabilities	$ 28,011	$ 32,125		$ 32,579
Operating lease cost	17,379	$ 17,838
Rent expense			$ 15,839
2021	12,539
2022	6,821
2023	3,950
2024	1,678
2025	609
After 2025	6,355
Total lease payments	31,952
Less: Interest	$ 3,941
Weighted-average remaining lease term (years)	5 years 9 months 18 days	6 years
Weighted-average discount rates	3.52%	3.90%
Operating cash flows from operating leases	$ 13,907	$ 13,546
Leased assets obtained in exchange for new operating lease liabilities	$ 8,012	$ 11,823
Minimum [Member]
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Renewal periods	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Remaining lease term	10 years
Renewal periods	5 years