Annual report pursuant to Section 13 and 15(d)

Compensation and Other Benefit Plans - Unvested RSU Activity (Details)

v3.10.0.1
Compensation and Other Benefit Plans - Unvested RSU Activity (Details) - Restricted Stock Units (RSUs) [Member]
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of Shares, Unvested balance at January 1, 2018 | shares 18,480
Number of Shares, Vested | shares (18,047)
Number of Shares, Unvested balance at December 31, 2018 | shares 433
Weighted-Average Grant-Date Fair Value, Unvested balance at January 1, 2018 | $ / shares $ 18.00
Weighted-Average Grant-Date Fair Value, Vested | $ / shares 18.27
Weighted-Average Grant-Date Fair Value, Unvested balance at December 31, 2018 | $ / shares $ 7.01