Real Estate Investments - Narrative (Details) ft² in Thousands, $ in Thousands								12 Months Ended
	Dec. 06, 2021 USD ($) ft²	Nov. 10, 2021 USD ($) ft²	Oct. 12, 2021 USD ($) ft²	Sep. 28, 2021 USD ($)	Sep. 01, 2021 USD ($) ft²	Aug. 12, 2021 USD ($)	Apr. 21, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Real Estate [Line Items]
Proceeds from sale of real estate								$ 68,003	$ 0	$ 58,930
Gain on sale of real estate								22,340	$ 0	$ 13,175
Canyon Creek Plaza | San Jose, CA
Real Estate [Line Items]
Adjusted purchase price					$ 28,100
Area of property (sq ft) | ft²					65
Palomar Village | Temecula, CA
Real Estate [Line Items]
Adjusted purchase price			$ 32,600
Area of property (sq ft) | ft²			125
South Point Plaza | Everett, WA
Real Estate [Line Items]
Adjusted purchase price		$ 37,600
Area of property (sq ft) | ft²		190
Olympia West Center | Olympia, WA
Real Estate [Line Items]
Adjusted purchase price	$ 24,900
Area of property (sq ft) | ft²	69
Single tenant parcel | Pinole, CA
Real Estate [Line Items]
Adjusted purchase price								2,300
Euclid Shopping Center | San Diego, CA
Real Estate [Line Items]
Sales price of property sold							$ 25,800
Proceeds from sale of real estate							$ 25,300
Gain on sale of real estate								9,500
Green Valley Station | Sacramento, CA
Real Estate [Line Items]
Sales price of property sold						$ 15,100
Proceeds from sale of real estate						$ 14,400
Gain on sale of real estate								5,500
Mills Shopping Center | Sacramento, CA
Real Estate [Line Items]
Sales price of property sold				$ 28,800
Proceeds from sale of real estate				$ 28,400
Gain on sale of real estate								$ 7,400