TWO Annual report pursuant to Section 13 and 15(d)

Commercial Real Estate Assets by Geographic Location (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 1,412,543	$ 660,953	$ 0	$ 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	$ 250,044	$ 131,488
Loans and Leases Receivable, Percentage of Total, Commercial	17.70%	19.90%
United States, Southeastern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 239,194	$ 79,118
Loans and Leases Receivable, Percentage of Total, Commercial	16.90%	12.00%
United States, Southwestern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 267,944	$ 161,721
Loans and Leases Receivable, Percentage of Total, Commercial	19.00%	24.40%
United States, Northeastern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 578,762	$ 238,913
Loans and Leases Receivable, Percentage of Total, Commercial	41.00%	36.20%
United States, Midwestern Region [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate assets	$ 76,599	$ 49,713
Loans and Leases Receivable, Percentage of Total, Commercial	5.40%	7.50%