For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.3)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Related Parties
-URI http://asc.fasb.org/extlink&oid=16382449

Name:	us-gaap_NotesReceivableRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Notes Receivable (Details) $ in Thousands	Jun. 29, 2016	Dec. 31, 2016 USD ($)	Sep. 29, 2016 USD ($) a	Dec. 31, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable, Related Parties		$ 12,000
Partial Funding of Sea Turtle Development Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable, Related Parties			$ 11,000	$ 1,600
Area of Land \| a			10.39
Related Party Transaction, Rate	12.00%
Related Party Transaction, Periodic Interest Payment, Rate	8.00%
Related Party Transaction, Interest Payment Due At Maturity, Rate	4.00%
Consideration for Sale of Land Promissory Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable, Related Parties			$ 1,000