Goodwill and other intangibles. The summary of changes in goodwill is as follows:



	Title		Ancillary Services and Corporate	Total
	($000 omitted)
Balances at January 1, 2017	211,365		5,729	217,094
Acquisitions	14,419		—	14,419
Disposals	(85	)	—	(85	)
Balances at December 31, 2017	225,699		5,729	231,428
Acquisitions	17,504		—	17,504
Disposals	(42	)	—	(42	)
Balances at December 31, 2018	243,161		5,729	248,890

The Company evaluates goodwill for impairment annually based on information as of June 30 of the current year or more frequently if circumstances suggest that impairment may exist. In 2018 and 2017, the Company determined that it was more likely than not that goodwill related to all of its reporting units was not impaired. The Company utilized the quantitative approach in performing the impairment analysis in 2018, while it used the qualitative approach in performing the impairment analysis in 2017.

During 2018, the Company acquired several title businesses which increased goodwill related to the title segment by a total of $17.5 million, which is substantially deductible for income tax purposes over a period of 15 years. Also, in connection with the acquisitions, the Company identified and recorded $4.5 million of other intangibles, primarily related to employment and non-compete agreements, to be amortized between one year to three years from the dates of acquisition.

During 2017, the Company acquired certain title businesses primarily funded by borrowings on the Company's unsecured line of credit. As a result of these acquisitions, the Company increased its goodwill related to the title segment by a total of $14.4 million, which is deductible in full for income tax purposes over a period of 15 years. Also, in connection with the acquisitions, the Company identified and recorded $2.6 million of other intangibles, primarily related to acquired software to be amortized over 5 years from the date of acquisition.

The gross carrying amount, and accumulated amortization of other intangibles was $35.0 million and $25.3 million, respectively, at December 31, 2018 and $30.5 million and $20.8 million, respectively, at December 31, 2017. The amortization expense recorded for the Company's other intangible assets was $4.6 million and $3.8 million in 2018 and 2017, respectively. The annual amortization expense expected to be recognized in the next five years is approximately $4.3 million in 2019, $3.0 million in 2020, $1.1 million in 2021, $0.4 million in 2022 and $0.2 million in 2023.