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Intangible Assets, Net | 3 Months Ended
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Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets, Net | Intangible Assets, Net Intangible assets, net are summarized as follows:
| March 31, 2018 |  | December 31, 2017
($ in thousands) |  |  |
Definite-lived intangible assets: |  |  |
Investment contracts | $ | 425,747 |  |  | $ | 425,747 |
Accumulated amortization | (172,345 | ) |  | (167,309 | )
Definite-lived intangible assets, net | 253,402 |  |  | 258,438 |
Indefinite-lived intangible assets | 43,516 |  |  | 43,516 |
Total intangible assets, net | $ | 296,918 |  |  | $ | 301,954 |
Activity in intangible assets, net is as follows:
| Three Months Ended March 31,
| 2018 |  | 2017
($ in thousands) |  |  |
Intangible assets, net |  |  |
Balance, beginning of period | $ | 301,954 |  |  | $ | 38,427 |
Amortization | (5,036 | ) |  | (233 | )
Balance, end of period | $ | 296,918 |  |  | $ | 38,194 |
Estimated amortization expense of intangible assets for the remainder of fiscal year 2018 and succeeding fiscal years is as follows:
($ in thousands) |  |
Fiscal Year |  | Amount
2018 |  | $ | 15,073 |
2019 |  | 20,043 |
2020 |  | 19,878 |
2021 |  | 19,867 |
2022 |  | 19,742 |
2023 and thereafter |  | 158,799 |
|  | $ | 253,402 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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