Stock-based Payments and Director Fees - Schedule of Management Fees and Director Fees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares (in shares)	195,629	210,033	160,360
Amount of expense recognized	$ 2,758	$ 2,963	$ 2,485
Management fees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares (in shares)	184,681	200,405	150,652
Amount of expense recognized	$ 2,600	$ 2,813	$ 2,335
Independent director fees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares (in shares)	10,948	9,628	9,708
Amount of expense recognized	$ 158	$ 150	$ 150