Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following is a summary of revenue sources for the years ended December 31, 2020, 2019 and 2018.

	Year Ended December 31,
(Amounts in thousands)	2020		2019		2018
Lease revenues (1)	$	191,416	$	217,251	$	223,388
Parking revenue	4,207		5,608		5,680
Tenant services	3,519		3,491		3,757
Rental revenues	$	199,142	$	226,350	$	232,825
(1) Reduced by $14,959 and $209 for the years ended December 31, 2020 and 2019, respectively, for the write-off of lease receivables deemed uncollectable (primarily write-offs of receivables arising from the straight-lining of rents).

Operating Lease, Lease Income

The components of lease revenues for the years ended December 31, 2020 and 2019 are as follows:

	Year Ended December 31,
(Amounts in thousands)	2020		2019
Fixed lease revenues	$	120,395	$	142,679
Variable lease revenues	71,021		74,572
Lease revenues	$	191,416	$	217,251