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Noncontrolling Interest (Tables)
6 Months Ended
Jun. 30, 2020
Noncontrolling Interest [Abstract]  
Noncontrolling interest activity
The following table summarizes the activity for noncontrolling interest in the Company for the six months ended June 30, 2020 and the year ended December 31, 2019.
Noncontrolling InterestLTIP UnitsOther
Common Units
Total
Noncontrolling Common Units
Noncontrolling Interest
Balance at December 31, 20181,616,200  2,453,234  4,069,434  3.5 %
Granted/Issued364,173  —  364,173  N/A
Forfeited(16,618) —  (16,618) N/A
Conversions from LTIP units to Other Common Units(266,397) 266,397  —  N/A
Redemptions from Other Common Units to common stock—  (680,137) (680,137) N/A
Balance at December 31, 20191,697,358  2,039,494  3,736,852  2.5 %
Granted/Issued278,806  —  278,806  N/A
Forfeited—  —  —  N/A
Conversions from LTIP units to Other Common Units(197,775) 197,775  —  N/A
Redemptions from Other Common Units to common stock—  (447,730) (447,730) N/A
Balance at June 30, 20201,778,389  1,789,539  3,567,928  2.3 %
Schedule of share-based payment award, LTIP unit awards, valuation assumptions The following table summarizes the assumptions used in valuing such LTIP units granted during the six months ended June 30, 2020 (excluding those LTIP units granted pursuant to the January 6, 2017 performance units; refer to Note 8 for details).
LTIP UnitsAssumptions
Grant dateJanuary 8, 2020
Expected term (years)10
Expected volatility18.0 %
Expected dividend yield5.75 %
Risk-free interest rate1.61 %
Fair value of LTIP units at issuance (in thousands)$4,030  
LTIP units at issuance136,741  
Fair value unit price per LTIP unit at issuance$29.47  
Schedule of activity related to unvested LTIP unit awards
The following table summarizes activity related to the Company’s unvested LTIP units for the six months ended June 30, 2020 and the year ended December 31, 2019.

Unvested LTIP UnitsLTIP Units
Balance at December 31, 2018251,216  
Granted364,173  
Vested(371,423) 
Forfeited(16,618) 
Balance at December 31, 2019227,348  
Granted278,806  
Vested(174,145) 
Forfeited—  
Balance at June 30, 2020332,009  
Schedule of vested LTIP unit award activity
The following table summarizes the fair value at vesting for the LTIP units that vested during the three and six months ended June 30, 2020 and 2019.
 Three months ended June 30,Six months ended June 30,
Vested LTIP units2020201920202019
Vested LTIP units43,958  46,652  174,145  204,341  
Fair value of vested LTIP units (in thousands)$1,213  $1,401  $5,074  $5,464