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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3-4)
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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Subparagraph a(1)
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-Name Regulation S-X (SX)
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Commitments and Contingencies (Details) - USD ($) $ in Thousands	1 Months Ended
	Jul. 31, 2016	Apr. 01, 2017	Sep. 30, 2016
Loss Contingencies [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $1,230 and $1,012 at April 1, 2017 and September 30, 2016, respectively		$ 142,620	$ 161,357
Pending Litigation
Loss Contingencies [Line Items]
Loss contingency accrual		2,600
Korea
Loss Contingencies [Line Items]
Income tax examination, estimate of possible loss	$ 12,000
Minimum [Member] \| Customer Contracts [Member]
Loss Contingencies [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $1,230 and $1,012 at April 1, 2017 and September 30, 2016, respectively		0
Maximum [Member] \| Customer Contracts [Member]
Loss Contingencies [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $1,230 and $1,012 at April 1, 2017 and September 30, 2016, respectively		$ 17,300