Debt - Hawaii Retail Credit Facilities (Details)	Jun. 28, 2017 USD ($)
Hawaii Retail Credit Facilities \| Revolving Credit Facility \| Subsidiaries
Line of Credit Facility [Line Items]
Maximum allowed dividend (no more than)	$ 15,000,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration