Concentration Of Credit Risk (Details) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	[1]	Jun. 30, 2019	[1]	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Concentration Risk [Line Items]
Revenues	$ 103,420	$ 105,805		$ 104,088		$ 103,227	$ 106,846	$ 106,693	$ 96,586	$ 86,270	$ 416,540	$ 396,395	$ 315,917
Single Largest Container Lessee [Member] | Customer Concentration Risk [Member] | Total Revenue [Member]
Concentration Risk [Line Items]
Percentage of operations comprised by segment											13.40%	11.80%	9.70%
Revenues											$ 65,900	$ 58,000	$ 34,700
Single Largest Container Lessee [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Percentage of operations comprised by segment											6.00%	6.00%
Second Largest Container Lessee [Member] | Customer Concentration Risk [Member] | Total Revenue [Member]
Concentration Risk [Line Items]
Percentage of operations comprised by segment											8.40%	8.40%	10.50%
Revenues											$ 41,400	$ 41,300	$ 37,500
Second Largest Container Lessee [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Percentage of operations comprised by segment											11.00%	15.00%

[1] Subsequent to the filing of the Company's Quarterly Reports on Form 10-Q for the periods ended June 30, 2019 and September 30, 2019, the Company identified misstatements arising from the misclassification of certain leases. The Company has determined that the misstatements are immaterial to the prior quarters' consolidated financial statements. The impact of the adjustments is set out below (in thousands, except share amount):