Share-Based Payments (Details) $ / shares in Units, $ in Thousands				12 Months Ended			50 Months Ended
	Jun. 06, 2019 director shares	Mar. 28, 2019 shares	Jun. 07, 2018 director shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Jun. 30, 2016 shares
Share-Based Payments
Shares authorized (as a percent)					3.00%
Number of shares remained available for issuance (in shares)				688,305
Stock-based compensation expense recognized | $				$ 564	$ 265	$ 981
Common Stock Outstanding
Share-Based Payments
Number of shares remained available for issuance (in shares)				1,582,594
Equity awards
Share-Based Payments
Unamortized compensation expense | $				$ 968	$ 117
Shares of Restricted Stock
Granted (in shares)							894,289
Restricted common stock
Share-Based Payments
Vested (in shares)				29,200	84,203	152,630
Shares of Restricted Stock
Restricted Stock Shares Outstanding, beginning of period (in shares)				753,973	725,449
Granted (in shares)		108,000		140,316	28,524
Restricted Stock Shares Outstanding, end of period (in shares)				894,289	753,973	725,449
Unvested at end of year (in shares)				138,592	27,476
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share) | $ / shares				$ 16.77	$ 17.00
Granted (in dollars per share) | $ / shares				10.34	10.75
Outstanding at end of year (in dollars per share) | $ / shares				15.76	16.77	$ 17.00
Unvested at end of year (in dollars per share) | $ / shares				$ 10.34	$ 10.78
Restricted common stock | Director Deferred Fee Plan
Shares of Restricted Stock
Granted (in shares)				3,536	2,620
Restricted common stock | June 2019
Shares of Restricted Stock
Unvested at end of year (in shares)				0	27,476
Restricted common stock | March 2020
Shares of Restricted Stock
Unvested at end of year (in shares)				36,000	0
Restricted common stock | June 2020
Shares of Restricted Stock
Unvested at end of year (in shares)				30,592	0
Restricted common stock | March 2021
Shares of Restricted Stock
Unvested at end of year (in shares)				36,000	0
Restricted common stock | March 2022
Shares of Restricted Stock
Unvested at end of year (in shares)				36,000	0
Restricted common stock | Director
Share-Based Payments
Awards granted to each of the entity's independent directors (in shares)	7,195		6,476
Share Based Compensation Arrangement by Share Based Payment Award, Number of Directors to whom Awards were Granted | director	4		4
Shares of Restricted Stock
Granted (in shares)	28,780		25,904