15.	CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS

The following table presents changes in Accumulated other comprehensive loss by component for the periods presented (in thousands):

	13-Weeks Ended						39-Weeks Ended
	September 30, 2017			October 1, 2016			September 30, 2017			October 1, 2016
Accumulated Other Comprehensive Loss Components
Defined benefit pension and other postretirement plans:
Balance at beginning of period ⁽¹⁾	$	(116,826	)	$	(90,621	)	$	(119,363	)	$	(74,378	)
Reclassification adjustments:
Amortization of prior service cost^{(2) (3)}		37			41			109			123
Amortization of net loss^{(2) (3)}		699			2,046			2,774			6,138
Settlements^{(2) (3)}		1,000			750			3,000			2,250
Prior year correction⁽⁴⁾		—			—			—			(21,917	)
Total before income tax		1,736			2,837			5,883			(13,406	)
Income tax provision (benefit)		677			(5,199	)		2,287			(5,199	)
Current period comprehensive income (loss), net of tax		1,059			8,036			3,596			(8,207	)
Balance at end of period ⁽¹⁾	$	(115,767	)	$	(82,585	)	$	(115,767	)	$	(82,585	)

Interest rate swap derivative cash flow hedge:
Balance at beginning of period ⁽¹⁾	$	—		$	—		$	—		$	—
Change in fair value of interest rate swaps		3,091			—			3,091			—
Amounts reclassified to interest expense−net		911			—			911			—
Total before income tax		4,002			—			4,002			—
Income tax provision		1,557			—			1,557			—
Current period comprehensive income, net of tax		2,445			—			2,445			—
Balance at end of period ⁽¹⁾	$	2,445		$	—		$	2,445		$	—
Accumulated Other Comprehensive Loss at end of period⁽¹⁾	$	(113,322	)	$	(82,585	)	$	(113,322	)	$	(82,585	)

(1)

Amounts are presented net of tax.

(2)

Included in the computation of Net periodic benefit costs. See Note 13, Retirement Plans, for additional information.

(3)

Included in Distribution, selling and administrative costs in the Consolidated Statements of Comprehensive Income.

(4)

Correction of a computational error related to a third quarter 2015 pension curtailment. See discussion below.

In the second quarter of 2016, the Company recorded a $22 million increase to its pension obligation, with a corresponding increase to Accumulated other comprehensive loss, to correct a computational error related to a September 30, 2015 pension plan freeze. The Company determined the error did not materially impact the financial statements for any of the periods reported.