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Leases (Operating Leases Prior to Adoption of ASC 842) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Operating Lease Commitment
2019	$ 14,780
2020	13,027
2021	12,259
2022	9,322
2023	9,722
Thereafter	31,475
Total minimum lease payments	90,585
Sublease Receipts
2019	1,385
2020	1,693
2021	1,597
2022	1,551
2023	1,145
Thereafter	2,905
Total minimum lease payments	$ 10,276

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