Summary of Significant Accounting Policies Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Assets [Abstract]
Other Receivables	$ 16,083	$ 13,632
Servicing Asset	9,614	6,477
Prepaid Expense	13,841	8,605
Prepaid Land Acquisition Costs	5,688	7,873
Other Assets, Miscellaneous	25,085	24,207
Other Assets	$ 70,311	$ 60,794