Changes in shareholders' equity (Tables)

3 Months Ended

Mar. 27, 2016

Equity [Abstract]

Reconciliation of Basic to Diluted Weighted Average Common Shares Outstanding

The following table provides a reconciliation of basic to diluted weighted average shares outstanding:

	Three Months Ended
	March 27, 2016	March 29, 2015
	(Shares in thousands)
Basic	41,647	41,469
Dilutive effect of share-based awards	519	467
Dilutive effect of 3.875% Convertible Notes and warrants	6,616	5,359
Diluted	48,782	47,295

Change in Accumulated Other Comprehensive Income (Loss)

The following tables provide information relating to the changes in accumulated other comprehensive loss, net of tax, for the three months ended March 27, 2016 and March 29, 2015:

	Cash Flow Hedges			Pension and Other Postretirement Benefit Plans			Foreign Currency Translation Adjustment			Accumulated Other Comprehensive (Loss) Income
	(Dollars in thousands)
Balance as of December 31, 2015	$	(2,491	)	$	(138,887	)	$	(229,746	)	$	(371,124	)
Other comprehensive income (loss) before reclassifications	(50		)	182			20,476			20,608
Amounts reclassified from accumulated other comprehensive (loss) income	1,530			1,056			—			2,586
Net current-period other comprehensive income	1,480			1,238			20,476			23,194
Balance as of March 27, 2016	$	(1,011	)	$	(137,649	)	$	(209,270	)	$	(347,930	)

	Cash Flow Hedges			Pension and Other Postretirement Benefit Plans			Foreign Currency Translation Adjustment			Accumulated Other Comprehensive (Loss) Income
	(Dollars in thousands)
Balance at December 31, 2014	$	—		$	(141,744	)	$	(119,151	)	$	(260,895	)
Other comprehensive loss before reclassifications	243			810			(83,151		)	(82,098		)
Amounts reclassified from accumulated other comprehensive loss	(199		)	1,096			—			897
Net current-period other comprehensive (loss) income	44			1,906			(83,151		)	(81,201		)
Balance at March 29, 2015	$	44		$	(139,838	)	$	(202,302	)	$	(342,096	)

Reclassification of Gain/Losses into Income/Expense, Net of Tax

The following table provides information relating to the reclassifications of losses/(gains) in accumulated other comprehensive (loss) income into expense/(income), net of tax, for the three months ended March 27, 2016 and March 29, 2015:

	Three Months Ended
	March 27, 2016			March 29, 2015
	(Dollars in thousands)
Losses (gains) on foreign exchange contracts:
Cost of goods sold	$	1,871		$	(209	)
Total before tax	1,871			(209		)
Tax (benefit) expense	(341		)	10
Net of tax	$	1,530		$	(199	)
Amortization of pension and other postretirement benefit items:
Actuarial losses (1)	$	1,622		$	1,606
Prior-service costs(1)	14			—
Total before tax	1,636			1,606
Tax benefit	(580		)	(510		)
Net of tax	$	1,056		$	1,096
Total reclassifications, net of tax	$	2,586		$	897

(1) These accumulated other comprehensive (loss) income components are included in the computation of net benefit cost of pension and other postretirement benefit plans (see Note 11 for additional information).