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Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2019
Business Combinations [Abstract]  
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] December 31, 2019 (in thousands):
Years ending December 31,
Total intangible assets
2020
$
22,491

2021
16,549

2022
10,497

2023
4,657

2024
1,962

2025 and thereafter
—

Total
$
56,156