Note 9  Intangible Assets, Goodwill and Title Plant Intangible Assets The estimated fair values of intangible assets recognized as the result of title insurance agency acquisitions, all Level 3 inputs, are principally based on values obtained from an independent third-party valuation service. In accordance with ASC 350, Intangibles  Goodwill and Other , management determined that no events or changes in circumstances occurred during the six-month periods ended June 30, 2019 and 2018 that would indicate the carrying amounts may not be recoverable, and therefore determined that no identifiable intangible assets were impaired. Identifiable intangible assets consist of the following: (in thousands) As of June 30, 2019 As of December 31, 2018 Referral relationships $ 6,416 $ 6,416 Non-compete agreements 1,406 1,406 Tradename 560 560 Total 8,382 8,382 Accumulated amortization (2,204 ) (1,952 ) Identifiable intangible assets, net $ 6,178 $ 6,430 The following table provides the estimated aggregate amortization expense for each of the five succeeding fiscal years: Year Ended (in thousands) 2019 $ 252 2020 569 2021 562 2022 525 2023 525 Thereafter 3,745 Total $ 6,178 Goodwill and Title Plant As of June 30, 2019 , the Company recognized $4.4 million in goodwill and $690 thousand in a title plant, net of impairments, as the result of title insurance agency acquisitions. The title plant is included with other assets in the Consolidated Balance Sheets. The fair values of goodwill and the title plant, both Level 3 inputs, are principally based on values obtained from an independent third-party valuation service as of the date of acquisition. In accordance with ASC 350, Intangibles  Goodwill and Other , management determined that no events or changes in circumstances occurred during the six-month periods ended June 30, 2019 and 2018 that would indicate the carrying amounts may not be recoverable, and therefore determined that neither goodwill nor the title plant were impaired.