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Intangible assets, net | 12 Months Ended
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Dec. 31, 2017
Intangible assets, net |
Intangible assets, net | 7. Intangible assets, net: The gross carrying amount of core deposit intangible assets totaled $8,146 at December 31, 2017 and 2016. The gross carrying amount of trade name intangible assets totaled $203 at December 31, 2017 and 2016. The gross carrying amount of the intangible asset related to the acquisition of an asset management and retirement plan services company acquired in 2015 totaled $1,091 at December 31, 2017 and 2016. The accumulated amortization on core deposit intangible assets was $5,810 and $4,958 at December 31, 2017 and 2016, respectively. The accumulated amortization on trade name intangible assets was $128 and $102 at December 31, 2017 and 2016, respectively. The accumulated amortization on the asset management and retirement plan services intangible asset was $324 and $169 at December 31, 2017 and 2016, respectively. Amortization expense amounted to $1,034, $1,186 and $1,195 in 2017, 2016 and 2015, respectively. The estimated amortization expense on intangible assets in years subsequent to December 31, 2017, is as follows:
2018 |  | $ | 882 |
2019 |  |  | 730 |
2020 |  |  | 606 |
2021 |  |  | 491 |
2022 |  |  | 363 |
Thereafter |  |  | 106 |

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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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