TWO Quarterly report pursuant to Section 13 or 15(d)

Commercial Real Estate Assets by Geographic Location (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 1,114,548	$ 926,377	$ 660,953	$ 290,910	$ 45,605	$ 0
Loans and Leases Receivable, Percentage of Total, Commercial	100.00%		100.00%
United States, Western Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 180,943		$ 131,488
Loans and Leases Receivable, Percentage of Total, Commercial	16.20%		19.90%
United States, Southeastern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 104,688		$ 79,118
Loans and Leases Receivable, Percentage of Total, Commercial	9.40%		12.00%
United States, Southwestern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 266,238		$ 161,721
Loans and Leases Receivable, Percentage of Total, Commercial	23.90%		24.40%
United States, Northeastern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 491,503		$ 238,913
Loans and Leases Receivable, Percentage of Total, Commercial	44.10%		36.20%
United States, Midwestern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 71,176		$ 49,713
Loans and Leases Receivable, Percentage of Total, Commercial	6.40%		7.50%