Operating (Gains), Losses and Other Charges, Net

Operating (gains), losses and other charges, net were comprised of the following:



	Fiscal Year Ended
	December 27, 2017			December 28, 2016		December 30, 2015
	(In thousands)
Pension settlement loss	$	—		$	24,297	$	—
Software implementation costs	5,247			—		—
(Gains) losses on sales of assets and other, net	(1,729		)	29		(93		)
Restructuring charges and exit costs	485			1,486		1,524
Impairment charges	326			1,098		935
Operating (gains), losses and other charges, net	$	4,329		$	26,910	$	2,366

Software implementation costs of $5.2 million for the year ended December 27, 2017 were the result of our investment in a new cloud-based Enterprise Resource Planning system. Gains on sales of assets and other, net of $1.7 million for the year ended December 27, 2017 primarily related to real estate sold to franchisees. The pre-tax pension settlement loss of $24.3 million related to the completion of the liquidation of the Advantica Pension Plan during the year ended December 28, 2016. See Note 11 for details on the Pension Plan liquidation.

Restructuring charges and exit costs were comprised of the following:



	Fiscal Year Ended
	December 27, 2017		December 28, 2016		December 30, 2015
	(In thousands)
Exit costs	$	385	$	591	$	697
Severance and other restructuring charges	100		895		827
Total restructuring charges and exit costs	$	485	$	1,486	$	1,524

The components of the change in accrued exit cost liabilities were as follows:



	December 27, 2017			December 28, 2016
	(In thousands)
Balance, beginning of year	$	1,896		$	2,043
Exit costs ⁽¹⁾	385			591
Payments, net of sublease receipts	(1,189		)	(855		)
Interest accretion	88			117
Balance, end of year	1,180			1,896
Less current portion included in other current liabilities	345			330
Long-term portion included in other noncurrent liabilities	$	835		$	1,566


(1)	Included as a component of operating (gains), losses and other charges, net.

As of December 27, 2017 and December 28, 2016, we had accrued severance and other restructuring charges of less than $0.1 million and $0.4 million, respectively. The balance as of December 27, 2017 is expected to be paid during the next 12 months.

Estimated net cash payments related to exit cost liabilities in the next five years are as follows:



	(In thousands)
2018	$	414
2019	264
2020	179
2021	180
2022	180
Thereafter	168
Total	1,385
Less imputed interest	205
Present value of exit cost liabilities	$	1,180

The present value of exit cost liabilities is net of $1.4 million of subleases. See Note 8 for a schedule of future minimum lease commitments and amounts to be received as lessor or sub-lessor for both open and closed restaurants.

Impairment charges of $0.3 million for the year ended December 27, 2017 related to the relocation of two high-performing company restaurants due to the loss of property control. Impairment charges of $1.1 million for the year ended December 28, 2016 and $0.9 million for the year ended December 30, 2015 resulted primarily from the impairment of restaurants identified as assets held for sale.