Condensed Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Net income (loss)	$ (154,910)	$ 44,864
Other comprehensive income (loss), net of tax:
Change in foreign currency translation adjustments	(354)	(2,156)
Derivative financial instruments:
Change in net unrealized amount	(1,407)	(2,169)
Amount reclassified into net income	1,525	1,926
Defined benefit plans:
Changes in unrecognized net actuarial losses and unrecognized transition costs	(260)	1,060
Amortization of actuarial losses and transition costs	321	599
Total other comprehensive loss	(175)	(740)
Comprehensive income (loss)	$ (155,085)	$ 44,124