September 30, 2020

December 31, 2019

(In thousands)

Amortization

Period

Gross Amount

Accumulated Amortization

Net

Gross Amount

Accumulated Amortization

Net

Software developed for internal use

5-10 years

35,480

(8,503

)

26,977

29,690

(5,656

)

24,034

The gross amount associated with software developed for internal use represents capitalized costs of internally-developed software, including eligible salaries and staff benefits, share-based compensation, travel expenses incurred by relevant employees, and other relevant costs.

Amortization expenses of $1,063 and $689 for the three months ended September 30, 2020 and 2019, respectively, and $2,847 and $1,860 for the nine months ended September 30, 2020 and 2019, respectively, were included in depreciation and amortization expense. As of September 30, 2020, intangible assets of $2,635, included in the gross amounts of software developed for internal use, have not started amortization, as they are not ready for their intended use.

The Company capitalized costs of software developed for internal use of $1,646 and $1,708 during the three months ended September 30, 2020 and 2019, respectively, and $5,790 and $4,939 during the nine months ended September 30, 2020 and 2019, respectively.

As of September 30, 2020, estimated amortization expense related to the Company’s intangible assets for the remainder of 2020 through 2025 and thereafter are as follows:

(In thousands)
Year	September 30, 2020
Remainder of 2020	$	1,095
2021		4,776
2022		4,898
2023		4,821
2024		4,215
2025 and thereafter		7,172
Total	$	26,977