Summary of Significant Accounting Policies Cash Equivalents (Details) $ in Thousands	Jan. 01, 2017 USD ($)
Accounting Policies [Abstract]
Cash Equivalents, Insurance from Securities Investor Protection Corporation, Maximum per Account	$ 500

Cash Equivalents, Insurance from Securities Investor Protection Corporation, Maximum

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant