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Fair Value of Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2018
Financial Instruments Disclosure [Abstract] |
Carrying Value and Estimated Fair Value of Company's Financial Instruments | The following table presents the carrying value and estimated fair value of the Company’s financial instruments not carried at fair value on the condensed consolidated balance sheet at March 31, 2018 and December 31, 2017 ($ in thousands):
| March 31, 2018 |  | December 31, 2017
| Carrying Value |  | Estimated Fair Value |  | Carrying Value |  | Estimated Fair Value
Cash | $ | 98,310 |  |  | $ | 98,310 |  |  | $ | 77,671 |  |  | $ | 77,671 |
Commercial first mortgage loans, net | 3,029,240 |  |  | 3,033,356 |  |  | 2,653,826 |  |  | 2,657,262 |
Subordinate loans, net | 1,038,254 |  |  | 1,035,838 |  |  | 1,025,932 |  |  | 1,029,390 |
Secured debt arrangements | (1,226,786 | ) |  | (1,226,786 | ) |  | (1,345,195 | ) |  | (1,345,195 | )
2019 Notes | (252,270 | ) |  | (273,571 | ) |  | (251,935 | ) |  | (267,506 | )
2022 Notes | (333,342 | ) |  | (346,604 | ) |  | (332,962 | ) |  | (350,175 | )

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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