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Goodwill and Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Amortizable Intangible assets |  |  |
Gross Carrying Amount | $ 73,014 | $ 67,127 |
Accumulated Amortization | (46,745) | (40,327) |
Amortization of Intangible Assets | $ (6,400) | (6,100) | $ (5,500)
Finite-Lived Intangible Assets, Remaining Amortization Period | 8 years |  |
Intangible assets, net | $ 26,269 | 26,800 |
Capital expenditures and asset acquisitions, net of cash acquired | 49,811 | 40,706 | 40,176
Goodwill, Other Increase (Decrease) | 106 | 8 |
Foreign exchange | (148) |  |
2019 | 4,767 |  |
2020 | 3,807 |  |
2021 | 2,859 |  |
2022 | 2,612 |  |
2023 | 1,884 |  |
Thereafter | 9,724 |  |
Finite-Lived Intangible Assets, Net | 25,653 |  |
Increase (Decrease) in Other Current Assets | (1,951) | (845) | (3,808)
Patents |  |  |
Amortizable Intangible assets |  |  |
Gross Carrying Amount | 10,773 | 4,699 | 4,659
Accumulated Amortization | (1,362) | (934) | (561)
Amortization of Intangible Assets | (428) | (373) |
Intangible assets, net | 9,411 | 3,765 | 4,098
Finite-lived Intangible Assets Acquired | 6,074 | 40 |
Unpatented Technology |  |  |
Amortizable Intangible assets |  |  |
Gross Carrying Amount | 22,403 | 22,104 | 21,616
Accumulated Amortization | (18,666) | (16,492) | (14,361)
Amortization of Intangible Assets | (2,174) | (2,131) |
Intangible assets, net | 3,737 | 5,612 | 7,255
Reclassifications | (348) |  |
Foreign exchange | (49) | 488 |
Noncompete Agreements Trademarks and Other |  |  |
Amortizable Intangible assets |  |  |
Gross Carrying Amount | 21,434 | 21,582 | 14,703
Accumulated Amortization | (10,355) | (7,724) | (5,529)
Amortization of Intangible Assets | (2,631) | (2,195) |
Intangible assets, net | 11,079 | 13,858 | 9,174
Finite-lived Intangible Assets Acquired |  | 6,700 |
Foreign exchange | (148) | 179 |
Customer Relationships |  |  |
Amortizable Intangible assets |  |  |
Gross Carrying Amount | 17,789 | 18,123 | 17,660
Accumulated Amortization | (16,361) | (15,175) | (13,732)
Amortization of Intangible Assets | (1,186) | (1,443) |
Intangible assets, net | 1,428 | 2,948 | 3,928
Finite-lived Intangible Assets Acquired |  | 290 |
Gain (Loss) on Disposition of Intangible Assets | (217) |  |
Foreign exchange | (117) | 173 |
North America |  |  |
Amortizable Intangible assets |  |  |
Gross Carrying Amount | 46,643 | 40,786 |
Accumulated Amortization | (26,346) | (22,697) |
Intangible assets, net | 20,297 | 18,089 |
Capital expenditures and asset acquisitions, net of cash acquired | 45,817 | 29,937 | $ 31,695
Goodwill, Other Increase (Decrease) | $ 0 | $ 0 |
Maximum |  |  |
Amortizable Intangible assets |  |  |
Finite-Lived Intangible Asset, Useful Life | 21 years |  |
Minimum |  |  |
Amortizable Intangible assets |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |

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