Commitments and Contingencies (Details) - USD ($) $ in Thousands	1 Months Ended
	Jul. 31, 2016	Jun. 29, 2019	Sep. 30, 2018
Loss Contingencies [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $822 and $607 at June 29, 2019 and September 30, 2018, respectively		$ 321,426	$ 129,297
Pending Litigation
Loss Contingencies [Line Items]
Loss contingency accrual		200
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		100
Maximum | Pending Litigation
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		$ 2,100