GOODWILL AND OTHER INTANGIBLES

The following table summarizes the activity in Goodwill for the fiscal years ended May 31:



	2018			2017
Gross beginning balance	$	158.5		$	155.8
Accumulated impairment	(39.6		)	(39.6		)
Beginning balance	$	118.9		$	116.2
Additions	—			2.8
Foreign currency translation	0.2			(0.1		)
Other	0.1			—
Ending balance	$	119.2		$	118.9

In fiscal 2017, the Company purchased a digital phonics business resulting in the recognition of $2.8 of Goodwill. See Note 9, "Acquisitions," for more information. There were no impairment charges related to Goodwill in any of the periods presented.

The following table summarizes Other intangibles for the fiscal years ended May 31:



	2018			2017
Other intangibles subject to amortization - beginning balance	$	9.0		$	4.7
Additions	3.3			7.0
Amortization expense	(2.1		)	(2.5		)
Foreign currency translation	(0.1		)	(0.2		)
Total other intangibles subject to amortization, net of accumulated amortization of $24.1 and $22.0, respectively	$	10.1		$	9.0

Total other intangibles not subject to amortization	2.1			2.1
Total other intangibles	$	12.2		$	11.1

In fiscal 2018, the Company purchased two U.S.-based book fair businesses resulting in $1.8 of amortizable intangible assets. In fiscal 2018, the Company also purchased a UK-based book distribution business resulting in $1.5 of amortizable intangible assets. In fiscal 2017, the Company purchased a digital phonics business and the assets of a U.S.-based book fair business resulting in the recognition of $6.8 and $0.2 of amortizable intangible assets, respectively.

Amortization expense for Other intangibles totaled $2.1, $2.5 and $2.2 for the fiscal years ended May 31, 2018, 2017 and 2016, respectively.

The following table reflects the estimated amortization expense for intangibles for the next five fiscal years ending May 31:



2019	$	2.6
2020	2.6
2021	2.3
2022	1.9
2023	0.6

Intangible assets with indefinite lives consist principally of trademark and tradename rights. Intangible assets with definite lives consist principally of customer lists, intellectual property and other agreements. Intangible assets with definite lives are amortized over their estimated useful lives. The weighted-average remaining useful lives of all amortizable intangible assets is approximately 4 years.