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Commitments and Contingencies (Details) - USD ($) $ in Thousands	1 Months Ended
	Jul. 31, 2016	Dec. 29, 2018	Sep. 30, 2018
Loss Contingencies [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $564 and $607 at December 29, 2018 and September 30, 2018, respectively		$ 385,670	$ 129,297
Pending Litigation
Loss Contingencies [Line Items]
Loss contingency accrual		400
Korea
Loss Contingencies [Line Items]
Income tax examination, estimate of possible loss	$ 12,000
Minimum \| Pending Litigation
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		500
Maximum \| Pending Litigation
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		$ 4,200