The following table summarizes our investments in commercial mortgages, mezzanine loans, other loans and preferred equity interests as of December 31, 2013:
| Unpaid Principal Balance  | 
 Unamortized (Discounts) Premiums  | 
 Carrying Amount  | 
 Number of Loans  | 
 Weighted- Average Coupon (1)  | 
 Range of Maturity Dates | |||||||||||||||||||
| 
  Commercial Real Estate (CRE) Loans  | 
 ||||||||||||||||||||||||
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  Commercial mortgages  | 
 $ | 792,526 | $ | (19,257 | ) | $ | 773,269 | 59 | 6.4 | % | Mar. 2014 to Jan. 2029 | |||||||||||||
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  Mezzanine loans  | 
 269,034 | (3,273 | ) | 265,761 | 81 | 9.6 | % | Mar. 2014 to Jan. 2029 | ||||||||||||||||
| 
  Preferred equity interests  | 
 54,389 | (939 | ) | 53,450 | 11 | 8.6 | % | May 2015 to Aug. 2025 | ||||||||||||||||
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  Total CRE Loans  | 
 1,115,949 | (23,469 | ) | 1,092,480 | 151 | 7.3 | % | |||||||||||||||||
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  Other loans  | 
 30,625 | 72 | 30,697 | 2 | 4.3 | % | Mar. 2014 to Oct. 2016 | |||||||||||||||||
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  Total Loans  | 
 1,146,574 | (23,397 | ) | 1,123,177 | 153 | 7.2 | % | |||||||||||||||||
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  Deferred fees  | 
 (800 | ) | 0 | (800 | ) | |||||||||||||||||||
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  Total investments in loans  | 
 $ | 1,145,774 | $ | (23,397 | ) | $ | 1,122,377 | |||||||||||||||||
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| (1) | Weighted-average coupon is calculated on the unpaid principal amount of the underlying instruments which does not necessarily correspond to the carrying amount. | 
The following table summarizes our investments in commercial mortgages, mezzanine loans, other loans and preferred equity interests as of December 31, 2012:
| Unpaid Principal Balance  | 
 Unamortized (Discounts) Premiums  | 
 Carrying Amount  | 
 Number of Loans  | 
 Weighted- Average Coupon (1)  | 
 Range of Maturity Dates | |||||||||||||||||||
| 
  Commercial Real Estate (CRE) Loans  | 
 ||||||||||||||||||||||||
| 
  Commercial mortgages  | 
 $ | 728,774 | $ | (25,807 | ) | $ | 702,967 | 50 | 6.4 | % | Mar. 2013 to Jan. 2023 | |||||||||||||
| 
  Mezzanine loans  | 
 275,457 | (4,355 | ) | 271,102 | 83 | 9.3 | % | Mar. 2013 to Nov. 2038 | ||||||||||||||||
| 
  Preferred equity interests  | 
 64,752 | (1,031 | ) | 63,721 | 15 | 9.7 | % | Mar. 2014 to Aug. 2025 | ||||||||||||||||
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  Total CRE Loans  | 
 1,068,983 | (31,193 | ) | 1,037,790 | 148 | 7.4 | % | |||||||||||||||||
| 
  Other loans  | 
 38,600 | (30 | ) | 38,570 | 2 | 4.9 | % | Mar. 2013 to Oct. 2016 | ||||||||||||||||
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  Total Loans  | 
 1,107,583 | (31,223 | ) | 1,076,360 | 150 | 7.3 | % | |||||||||||||||||
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  Deferred fees  | 
 (1,231 | ) | 0 | (1,231 | ) | |||||||||||||||||||
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  Total investments in loans  | 
 $ | 1,106,352 | $ | (31,223 | ) | $ | 1,075,129 | |||||||||||||||||
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| (1) | Weighted-average coupon is calculated on the unpaid principal amount of the underlying instruments which does not necessarily correspond to the carrying amount. |