Significant Accounting and Reporting Policies (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 29, 2019	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Jun. 24, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset			$ 4,354		$ 0	$ 0
Payments to acquire land	$ 150,300
Operating lease, liability			$ 4,133
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset				$ 73,500
Operating lease, liability				$ 73,500
Galveston Land [Member] | Scenario, Forecast [Member] | Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset		$ 6,000
Operating lease, liability		4,000
Galveston Land [Member] | Scenario, Forecast [Member] | Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset		8,000
Operating lease, liability		$ 6,000