Significant Accounting and Reporting Policies (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 29, 2019	Jan. 01, 2019	Dec. 31, 2018	Sep. 23, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset		$ 11,067		$ 0	$ 0
Operating lease, liability		9,366
Payments to acquire land	$ 150,300
Galveston Land [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset		6,800
Operating lease, liability		$ 5,300
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