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Goodwill and Intangible Assets - Schedule of Gross Carrying Value and Accumulated Amortization for Each Major Class of Intangible Asset (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016
Goodwill And Intangible Assets [Line Items] |  |
Amortized intangible assets - Gross Carrying Amount | $ 541,868 | $ 605,645
Intangible assets - Gross Carrying Amount | 632,768 | 696,545
Amortized intangible assets - Accumulated Amortization | (207,336) | (261,041)
Amortized intangible assets - Net | 334,532 | 344,604
Intangible assets - Net | 425,432 | 435,504
Banjo trade name |  |
Goodwill And Intangible Assets [Line Items] |  |
Indefinite lived intangible assets - Gross Carrying Amount | 62,100 | 62,100
Indefinite lived intangible assets - Net | 62,100 | 62,100
Akron Brass trade name |  |
Goodwill And Intangible Assets [Line Items] |  |
Indefinite lived intangible assets - Gross Carrying Amount | 28,800 | 28,800
Indefinite lived intangible assets - Net | 28,800 | 28,800
Patents |  |
Goodwill And Intangible Assets [Line Items] |  |
Amortized intangible assets - Gross Carrying Amount | 9,637 | 9,856
Amortized intangible assets - Accumulated Amortization | (6,783) | (6,635)
Amortized intangible assets - Net | $ 2,854 | 3,221
Amortized intangible assets - Weighted Average Life | 11 years |
Trade names |  |
Goodwill And Intangible Assets [Line Items] |  |
Amortized intangible assets - Gross Carrying Amount | $ 116,483 | 113,428
Amortized intangible assets - Accumulated Amortization | (47,197) | (42,653)
Amortized intangible assets - Net | $ 69,286 | 70,775
Amortized intangible assets - Weighted Average Life | 16 years |
Customer relationships |  |
Goodwill And Intangible Assets [Line Items] |  |
Amortized intangible assets - Gross Carrying Amount | $ 327,328 | 369,087
Amortized intangible assets - Accumulated Amortization | (125,540) | (161,065)
Amortized intangible assets - Net | $ 201,788 | 208,022
Amortized intangible assets - Weighted Average Life | 13 years |
Unpatented technology |  |
Goodwill And Intangible Assets [Line Items] |  |
Amortized intangible assets - Gross Carrying Amount | $ 87,586 | 106,747
Amortized intangible assets - Accumulated Amortization | (27,293) | (44,516)
Amortized intangible assets - Net | $ 60,293 | 62,231
Amortized intangible assets - Weighted Average Life | 13 years |
Other |  |
Goodwill And Intangible Assets [Line Items] |  |
Amortized intangible assets - Gross Carrying Amount | $ 834 | 6,527
Amortized intangible assets - Accumulated Amortization | (523) | (6,172)
Amortized intangible assets - Net | $ 311 | $ 355
Amortized intangible assets - Weighted Average Life | 10 years |

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