Quarterly report pursuant to Section 13 or 15(d)

Equity - Summary of Unvested Shares of Restricted Common Stock (Details)

v3.19.1
Equity - Summary of Unvested Shares of Restricted Common Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Restricted Shares of Common Stock [Member]    
Shares    
Beginning Balance (in shares) 1,386,756 1,399,593
Granted (in shares) 148,401 454,106
Vested (in shares) (551,502) (370,072)
Forfeited (in shares) 0 (96,871)
Ending Balance (in shares) 983,655 1,386,756
Weighted Average Share Price    
Beginning Balance (in usd per share) $ 19.00 $ 18.73
Granted (in usd per share) 23.96 19.72
Vested (in usd per share) 18.85 18.88
Forfeited (in usd per share) 0.00 18.92
Ending Balance (in usd per share) $ 19.83 $ 19.00
Value    
Beginning Balance $ 26.4 $ 26.2
Granted 3.5 9.0
Vested (10.4) (7.0)
Forfeited 0.0 (1.8)
Ending Balance $ 19.5 $ 26.4
Restricted Stock Units [Member]    
Shares    
Beginning Balance (in shares) 393,148 255,706
Granted (in shares) 44,492 176,128
Vested (in shares) 0 (20,368)
Forfeited (in shares) 0 (18,318)
Ending Balance (in shares) 437,640 393,148
Weighted Average Share Price    
Beginning Balance (in usd per share) $ 19.55 $ 18.99
Granted (in usd per share) 25.03 20.24
Vested (in usd per share) 0.00 18.99
Forfeited (in usd per share) 0.00 19.05
Ending Balance (in usd per share) $ 20.10 $ 19.55
Value    
Beginning Balance $ 7.7 $ 4.9
Granted 1.1 3.5
Vested 0.0 (0.4)
Forfeited 0.0 (0.3)
Ending Balance $ 8.8 $ 7.7