Other Intangible Assets

The significant majority of the Company's other intangible assets arose from the November 29, 2007 acquisition of Applebee's. Changes in the carrying amount of intangible assets for the years ended December 31, 2017, 2016 and 2015 are as follows:



	Not Subject to Amortization					Subject to Amortization
	Tradename			Other		Franchising Rights			Leaseholds⁽¹⁾			Total
	(In millions)
Balance at December 31, 2014	$	652.4		$	0.9	$	129.0		$	—		$	782.3
Amortization expense	—			—		(10.0		)	—			(10.0		)
Additions	—			0.6		—			—			0.6
Balance at December 31, 2015	652.4			1.5		119.0			—			772.9
Amortization expense	—			—		(10.0		)	—			(10.0		)
Additions	—			0.5		—			—			0.5
Balance at December 31, 2016	652.4			2.0		109.0			—			763.4
Impairment	(173.4		)	—		—			—			(173.4		)
Amortization expense	—			—		(10.0		)	(0.0		)	(10.0		)
Additions	—			0.5		—			2.3			2.8
Balance at December 31, 2017	$	479.0		$	2.5	$	99.0		$	2.3		$	582.8

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⁽¹⁾ See Note 19 - Refranchising of Company-operated Restaurants, of Notes to the Consolidated Financial Statements for additional information.

Annual amortization expense for the next five fiscal years is estimated to be approximately $10.0 million per year. The weighted average life of the intangible assets subject to amortization was 20 years at December 31, 2017 and 2016.

Gross and net carrying amounts of intangible assets subject to amortization at December 31, 2017 and 2016 are as follows:



	December 31, 2017							December 31, 2016
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
	(In millions)
Franchising rights	$	200.0	$	(101.0	)	$	99.0	$	200.0	$	(91.0	)	$	109.0
Leaseholds	2.3		(0.0		)	2.3		—		—			—
Total	$	202.3	$	(101.0	)	$	101.3	$	200.0	$	(91.0	)	$	109.0

The Company assessed the Applebee's tradename for impairment in accordance with its policy described in Note 2 - Basis of Presentation and Summary of Significant Accounting Policies. As discussed in Note 5 - Goodwill, the Company determined that indicators of impairment existed prior to the annual test for impairment and performed an interim quantitative test for impairment of Applebee's tradename in the third quarter of 2017. In performing the impairment test of the tradename, the Company used the relief of royalty method under the income approach method of valuation. Significant assumptions used to determine fair value under the relief of royalty method include future trends in sales, a royalty rate and a discount rate applied to the forecast revenue stream.

As a result of performing this quantitative test, the Company recognized an impairment of Applebee's tradename of $173.4 million. The Company recognized a tax benefit of $65.1 million related to the impairment.

In the fourth quarter of fiscal 2016, the Company performed a quantitative assessment of the Applebee's tradename and concluded the fair value exceeded the carrying amount. The Company considers an intangible asset at risk when its fair value is not higher than its carrying amount by more than 10%. The Applebee's tradename was not considered at risk as of December 31, 2016.