Annual report pursuant to Section 13 and 15(d)

Employee Benefits and Share-Based Compensation - Summary of Restricted Share Activity (Details 2)

v3.8.0.1
Employee Benefits and Share-Based Compensation - Summary of Restricted Share Activity (Details 2) - Time-Based Restricted Stock Awards
12 Months Ended
Dec. 31, 2017
$ / shares
shares
Number of Restricted Share Awards  
Non-vested as of January 1, 2017 | shares 16,872
Vested | shares (16,014)
Non-vested as of December 31, 2017 | shares 858
Weighted-Average Grant-Date Fair Value  
Non-vested as of January 1, 2017 | $ / shares $ 7.63
Vested | $ / shares 4.91
Non-vested as of December 31, 2017 | $ / shares $ 58.33