Organization and Summary of Significant Accounting Policies (Summary of Intangible Assets Amortized in Next Five Years) (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)
Value of in-place lease intangibles [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	$ (11,572)
Value of in-place lease intangibles [Member] | 2014 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(1,852)
Value of in-place lease intangibles [Member] | 2015 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(1,819)
Value of in-place lease intangibles [Member] | 2016 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(1,697)
Value of in-place lease intangibles [Member] | 2019 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(1,561)
Value of in-place lease intangibles [Member] | 2018 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(1,522)
Value of in-place lease intangibles [Member] | Year six and thereafter [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(3,121)
Customer-Related Intangible Assets [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(1,022)
Customer-Related Intangible Assets [Member] | 2014 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(945)
Customer-Related Intangible Assets [Member] | 2015 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(77)
Customer-Related Intangible Assets [Member] | 2016 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	0
Customer-Related Intangible Assets [Member] | 2019 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	0
Customer-Related Intangible Assets [Member] | 2018 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	0
Customer-Related Intangible Assets [Member] | Year six and thereafter [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	0
Above/(Below) Market Leases [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(378)
Above/(Below) Market Leases [Member] | 2014 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(73)
Above/(Below) Market Leases [Member] | 2015 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(76)
Above/(Below) Market Leases [Member] | 2016 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(56)
Above/(Below) Market Leases [Member] | 2019 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(19)
Above/(Below) Market Leases [Member] | 2018 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(19)
Above/(Below) Market Leases [Member] | Year six and thereafter [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(135)
Above-market lease intangibles [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(5,484)
Above-market lease intangibles [Member] | 2014 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(106)
Above-market lease intangibles [Member] | 2015 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(106)
Above-market lease intangibles [Member] | 2016 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(106)
Above-market lease intangibles [Member] | 2019 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(106)
Above-market lease intangibles [Member] | 2018 [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	(106)
Above-market lease intangibles [Member] | Year six and thereafter [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	$ (4,954)