SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) apartment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 USD ($)
Real Estate and Accumulated Depreciation [Line Items]
Encumbrance				$ 643,550
Initial cost
Land				2,887,393
Buildings and improvements				10,154,628
Costs capitalized subsequent to acquisition				2,019,724
Gross amount carried at close of period
Land and improvements				2,929,009
Buildings and improvements				12,132,736
Total	$ 15,061,745			15,061,745
Accumulated depreciation	(4,133,959)	$ (3,209,548)	$ (3,209,548)	(4,133,959)
Aggregate cost for federal income tax purpose	11,600,000
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Acquisition, development, and improvement of real estate	1,426,505	672,041	325,986
Disposition of real estate and other	(402,902)	0	(321,958)
Balance at the end of year	15,061,745
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at beginning of year	3,689,482	3,209,548	2,769,297
Depreciation expense	518,629	479,934	478,721
Depreciation expense - Disposals and other	(74,152)	0	(38,470)
Balance at the end of year	$ 4,133,959	3,689,482	3,209,548
Encumbered Apartment Communities
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	3,025
Encumbrance				643,550
Initial cost
Land				203,549
Buildings and improvements				767,029
Costs capitalized subsequent to acquisition				129,288
Gross amount carried at close of period
Land and improvements				207,899
Buildings and improvements				891,967
Total	$ 1,099,866			1,099,866
Accumulated depreciation	(266,467)			(266,467)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	1,099,866
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 266,467
Encumbered Apartment Communities | Belmont Station
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	275
Encumbrance				29,728
Initial cost
Land				8,100
Buildings and improvements				66,666
Costs capitalized subsequent to acquisition				7,386
Gross amount carried at close of period
Land and improvements				8,267
Buildings and improvements				73,885
Total	$ 82,152			82,152
Accumulated depreciation	$ (33,891)			(33,891)
Date of construction	2009
Date acquired	Mar-09
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 82,152
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 33,891
Encumbered Apartment Communities | Belmont Station | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Belmont Station | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Brio
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	300
Encumbrance				98,956
Initial cost
Land				16,885
Buildings and improvements				151,741
Costs capitalized subsequent to acquisition				1,263
Gross amount carried at close of period
Land and improvements				16,885
Buildings and improvements				153,004
Total	$ 169,889			169,889
Accumulated depreciation	$ (8,559)			(8,559)
Date of construction	2015
Date acquired	Jun-19
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 169,889
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 8,559
Encumbered Apartment Communities | Brio | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Brio | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Form 15
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	242
Encumbrance				42,271
Initial cost
Land				24,510
Buildings and improvements				72,221
Costs capitalized subsequent to acquisition				11,835
Gross amount carried at close of period
Land and improvements				25,540
Buildings and improvements				83,026
Total	$ 108,566			108,566
Accumulated depreciation	$ (13,807)			(13,807)
Date of construction	2014
Date acquired	Mar-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 108,566
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,807
Encumbered Apartment Communities | Form 15 | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Form 15 | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Fountain Park
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	705
Encumbrance				82,707
Initial cost
Land				25,073
Buildings and improvements				94,980
Costs capitalized subsequent to acquisition				36,019
Gross amount carried at close of period
Land and improvements				25,203
Buildings and improvements				130,869
Total	$ 156,072			156,072
Accumulated depreciation	$ (80,772)			(80,772)
Date of construction	2002
Date acquired	Feb-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 156,072
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 80,772
Encumbered Apartment Communities | Fountain Park | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Fountain Park | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Highridge
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	255
Encumbrance				69,345
Initial cost
Land				5,419
Buildings and improvements				18,347
Costs capitalized subsequent to acquisition				33,311
Gross amount carried at close of period
Land and improvements				6,073
Buildings and improvements				51,004
Total	$ 57,077			57,077
Accumulated depreciation	$ (41,762)			(41,762)
Date of construction	1972
Date acquired	May-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 57,077
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 41,762
Encumbered Apartment Communities | Highridge | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Highridge | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Magnolia Square/Magnolia Lane
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	188
Encumbrance				52,303
Initial cost
Land				8,190
Buildings and improvements				24,736
Costs capitalized subsequent to acquisition				18,553
Gross amount carried at close of period
Land and improvements				8,191
Buildings and improvements				43,288
Total	$ 51,479			51,479
Accumulated depreciation	$ (26,038)			(26,038)
Date of construction	1963
Date acquired	Sep-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,479
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,038
Encumbered Apartment Communities | Magnolia Square/Magnolia Lane | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Magnolia Square/Magnolia Lane | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Marquis
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	166
Encumbrance				44,077
Initial cost
Land				20,495
Buildings and improvements				47,823
Costs capitalized subsequent to acquisition				178
Gross amount carried at close of period
Land and improvements				20,495
Buildings and improvements				48,001
Total	$ 68,496			68,496
Accumulated depreciation	$ (3,290)			(3,290)
Date of construction	2015
Date acquired	Dec-18
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 68,496
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 3,290
Encumbered Apartment Communities | Marquis | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Marquis | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Sage At Cupertino
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	230
Encumbrance				51,758
Initial cost
Land				35,719
Buildings and improvements				53,449
Costs capitalized subsequent to acquisition				9,242
Gross amount carried at close of period
Land and improvements				35,719
Buildings and improvements				62,691
Total	$ 98,410			98,410
Accumulated depreciation	$ (9,454)			(9,454)
Date of construction	1971
Date acquired	Mar-17
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 98,410
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,454
Encumbered Apartment Communities | Sage At Cupertino | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Sage At Cupertino | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | The Barkley
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	161
Encumbrance				14,873
Initial cost
Land				0
Buildings and improvements				8,520
Costs capitalized subsequent to acquisition				7,659
Gross amount carried at close of period
Land and improvements				2,353
Buildings and improvements				13,826
Total	$ 16,179			16,179
Accumulated depreciation	$ (10,114)			(10,114)
Date of construction	1984
Date acquired	Apr-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 16,179
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 10,114
Encumbered Apartment Communities | The Barkley | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | The Barkley | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | The Dylan
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	184
Encumbrance				58,515
Initial cost
Land				19,984
Buildings and improvements				82,286
Costs capitalized subsequent to acquisition				1,502
Gross amount carried at close of period
Land and improvements				19,990
Buildings and improvements				83,782
Total	$ 103,772			103,772
Accumulated depreciation	$ (18,368)			(18,368)
Date of construction	2015
Date acquired	Mar-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 103,772
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,368
Encumbered Apartment Communities | The Dylan | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | The Dylan | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | The Huxley
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	187
Encumbrance				53,277
Initial cost
Land				19,362
Buildings and improvements				75,641
Costs capitalized subsequent to acquisition				1,710
Gross amount carried at close of period
Land and improvements				19,371
Buildings and improvements				77,342
Total	$ 96,713			96,713
Accumulated depreciation	$ (17,213)			(17,213)
Date of construction	2014
Date acquired	Mar-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 96,713
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 17,213
Encumbered Apartment Communities | The Huxley | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | The Huxley | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Township
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	132
Encumbrance				45,740
Initial cost
Land				19,812
Buildings and improvements				70,619
Costs capitalized subsequent to acquisition				630
Gross amount carried at close of period
Land and improvements				19,812
Buildings and improvements				71,249
Total	$ 91,061			91,061
Accumulated depreciation	$ (3,199)			(3,199)
Date of construction	2014
Date acquired	Sep-19
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 91,061
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 3,199
Encumbered Apartment Communities | Township | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Township | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Brookside Oaks | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Brookside Oaks | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | City View | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | City View | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Domaine | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Domaine | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Fairhaven Apartments | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Fairhaven Apartments | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Foster's Landing | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Encumbered Apartment Communities | Foster's Landing | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Montarosa | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Encumbered Apartment Communities | Montarosa | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Montebello | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Montebello | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Montejo | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Montejo | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | 1000 Kiely | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | 1000 Kiely | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Valley Park | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Valley Park | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities | Villa Angelina | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities | Villa Angelina | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	48,156
Initial cost
Land				2,680,765
Buildings and improvements				9,375,284
Costs capitalized subsequent to acquisition				1,876,157
Gross amount carried at close of period
Land and improvements				2,717,201
Buildings and improvements				11,215,005
Total	$ 13,932,206			13,932,206
Accumulated depreciation	(3,848,633)			(3,848,633)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	13,932,206
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 3,848,633
Unencumbered Apartment Communities | Agora
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	49
Initial cost
Land				4,932
Buildings and improvements				60,423
Costs capitalized subsequent to acquisition				187
Gross amount carried at close of period
Land and improvements				4,934
Buildings and improvements				60,608
Total	$ 65,542			65,542
Accumulated depreciation	$ (1,987)			(1,987)
Date of construction	2016
Date acquired	Jan-20
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 65,542
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 1,987
Unencumbered Apartment Communities | Agora | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Agora | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Alessio
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	624
Initial cost
Land				32,136
Buildings and improvements				128,543
Costs capitalized subsequent to acquisition				14,335
Gross amount carried at close of period
Land and improvements				32,136
Buildings and improvements				142,878
Total	$ 175,014			175,014
Accumulated depreciation	$ (37,803)			(37,803)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 175,014
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 37,803
Unencumbered Apartment Communities | Alessio | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Alessio | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Allegro
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	97
Initial cost
Land				5,869
Buildings and improvements				23,977
Costs capitalized subsequent to acquisition				2,758
Gross amount carried at close of period
Land and improvements				5,869
Buildings and improvements				26,735
Total	$ 32,604			32,604
Accumulated depreciation	$ (11,343)			(11,343)
Date of construction	2010
Date acquired	Oct-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,604
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,343
Unencumbered Apartment Communities | Allegro | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Allegro | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Allure at Scripps Ranch
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	194
Initial cost
Land				11,923
Buildings and improvements				47,690
Costs capitalized subsequent to acquisition				1,979
Gross amount carried at close of period
Land and improvements				11,923
Buildings and improvements				49,669
Total	$ 61,592			61,592
Accumulated depreciation	$ (12,386)			(12,386)
Date of construction	2002
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 61,592
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,386
Unencumbered Apartment Communities | Allure at Scripps Ranch | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Allure at Scripps Ranch | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Alpine Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	301
Initial cost
Land				4,967
Buildings and improvements				19,728
Costs capitalized subsequent to acquisition				9,687
Gross amount carried at close of period
Land and improvements				4,982
Buildings and improvements				29,400
Total	$ 34,382			34,382
Accumulated depreciation	$ (18,364)			(18,364)
Date of construction	1971
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 34,382
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,364
Unencumbered Apartment Communities | Alpine Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Alpine Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Anavia
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	250
Initial cost
Land				15,925
Buildings and improvements				63,712
Costs capitalized subsequent to acquisition				9,732
Gross amount carried at close of period
Land and improvements				15,925
Buildings and improvements				73,444
Total	$ 89,369			89,369
Accumulated depreciation	$ (25,398)			(25,398)
Date of construction	2009
Date acquired	Dec-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 89,369
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 25,398
Unencumbered Apartment Communities | Anavia | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Anavia | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Annaliese
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	56
Initial cost
Land				4,727
Buildings and improvements				14,229
Costs capitalized subsequent to acquisition				808
Gross amount carried at close of period
Land and improvements				4,726
Buildings and improvements				15,038
Total	$ 19,764			19,764
Accumulated depreciation	$ (4,182)			(4,182)
Date of construction	2009
Date acquired	Jan-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 19,764
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 4,182
Unencumbered Apartment Communities | Annaliese | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Annaliese | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Apex
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	366
Initial cost
Land				44,240
Buildings and improvements				103,251
Costs capitalized subsequent to acquisition				6,095
Gross amount carried at close of period
Land and improvements				44,240
Buildings and improvements				109,346
Total	$ 153,586			153,586
Accumulated depreciation	$ (23,316)			(23,316)
Date of construction	2014
Date acquired	Aug-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 153,586
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 23,316
Unencumbered Apartment Communities | Apex | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Apex | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Aqua at Marina Del Rey
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	500
Initial cost
Land				58,442
Buildings and improvements				175,326
Costs capitalized subsequent to acquisition				15,117
Gross amount carried at close of period
Land and improvements				58,442
Buildings and improvements				190,443
Total	$ 248,885			248,885
Accumulated depreciation	$ (52,469)			(52,469)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 248,885
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 52,469
Unencumbered Apartment Communities | Aqua at Marina Del Rey | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Aqua at Marina Del Rey | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Ascent
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	90
Initial cost
Land				3,924
Buildings and improvements				11,862
Costs capitalized subsequent to acquisition				2,286
Gross amount carried at close of period
Land and improvements				3,924
Buildings and improvements				14,148
Total	$ 18,072			18,072
Accumulated depreciation	$ (4,792)			(4,792)
Date of construction	1988
Date acquired	Oct-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,072
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 4,792
Unencumbered Apartment Communities | Ascent | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Ascent | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Ashton Sherman Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	264
Initial cost
Land				23,550
Buildings and improvements				93,811
Costs capitalized subsequent to acquisition				1,536
Gross amount carried at close of period
Land and improvements				23,550
Buildings and improvements				95,347
Total	$ 118,897			118,897
Accumulated depreciation	$ (13,614)			(13,614)
Date of construction	2014
Date acquired	Dec-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 118,897
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,614
Unencumbered Apartment Communities | Ashton Sherman Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Ashton Sherman Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Avant
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	440
Initial cost
Land				32,379
Buildings and improvements				137,940
Costs capitalized subsequent to acquisition				3,722
Gross amount carried at close of period
Land and improvements				32,379
Buildings and improvements				141,662
Total	$ 174,041			174,041
Accumulated depreciation	$ (26,788)			(26,788)
Date of construction	2014
Date acquired	Jun-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 174,041
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,788
Unencumbered Apartment Communities | Avant | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Avant | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Avenue 64
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	224
Initial cost
Land				27,235
Buildings and improvements				64,403
Costs capitalized subsequent to acquisition				16,322
Gross amount carried at close of period
Land and improvements				27,235
Buildings and improvements				80,725
Total	$ 107,960			107,960
Accumulated depreciation	$ (18,800)			(18,800)
Date of construction	2007
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 107,960
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,800
Unencumbered Apartment Communities | Avenue 64 | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Avenue 64 | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Aviara
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	166
Initial cost
Land				0
Buildings and improvements				49,813
Costs capitalized subsequent to acquisition				1,874
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				51,687
Total	$ 51,687			51,687
Accumulated depreciation	$ (13,707)			(13,707)
Date of construction	2013
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,687
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,707
Unencumbered Apartment Communities | Aviara | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Aviara | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Avondale at Warner Center
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	446
Initial cost
Land				10,536
Buildings and improvements				24,522
Costs capitalized subsequent to acquisition				25,418
Gross amount carried at close of period
Land and improvements				10,601
Buildings and improvements				49,875
Total	$ 60,476			60,476
Accumulated depreciation	$ (36,728)			(36,728)
Date of construction	1970
Date acquired	Jan-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 60,476
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 36,728
Unencumbered Apartment Communities | Avondale at Warner Center | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Avondale at Warner Center | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bel Air
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	462
Initial cost
Land				12,105
Buildings and improvements				18,252
Costs capitalized subsequent to acquisition				43,348
Gross amount carried at close of period
Land and improvements				12,682
Buildings and improvements				61,023
Total	$ 73,705			73,705
Accumulated depreciation	$ (43,768)			(43,768)
Date of construction	1988
Date acquired	Jan-95
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 73,705
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 43,768
Unencumbered Apartment Communities | Bel Air | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bel Air | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Belcarra
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	296
Initial cost
Land				21,725
Buildings and improvements				92,091
Costs capitalized subsequent to acquisition				2,613
Gross amount carried at close of period
Land and improvements				21,725
Buildings and improvements				94,704
Total	$ 116,429			116,429
Accumulated depreciation	$ (23,150)			(23,150)
Date of construction	2009
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 116,429
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 23,150
Unencumbered Apartment Communities | Belcarra | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Belcarra | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bella Villagio
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	231
Initial cost
Land				17,247
Buildings and improvements				40,343
Costs capitalized subsequent to acquisition				4,651
Gross amount carried at close of period
Land and improvements				17,247
Buildings and improvements				44,994
Total	$ 62,241			62,241
Accumulated depreciation	$ (16,688)			(16,688)
Date of construction	2004
Date acquired	Sep-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 62,241
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 16,688
Unencumbered Apartment Communities | Bella Villagio | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bella Villagio | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | BellCentre
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	248
Initial cost
Land				16,197
Buildings and improvements				67,207
Costs capitalized subsequent to acquisition				5,644
Gross amount carried at close of period
Land and improvements				16,197
Buildings and improvements				72,851
Total	$ 89,048			89,048
Accumulated depreciation	$ (18,845)			(18,845)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 89,048
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,845
Unencumbered Apartment Communities | BellCentre | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | BellCentre | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bellerive
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	63
Initial cost
Land				5,401
Buildings and improvements				21,803
Costs capitalized subsequent to acquisition				1,390
Gross amount carried at close of period
Land and improvements				5,401
Buildings and improvements				23,193
Total	$ 28,594			28,594
Accumulated depreciation	$ (8,573)			(8,573)
Date of construction	2011
Date acquired	Aug-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 28,594
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 8,573
Unencumbered Apartment Communities | Bellerive | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bellerive | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Belmont Terrace
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	71
Initial cost
Land				4,446
Buildings and improvements				10,290
Costs capitalized subsequent to acquisition				7,387
Gross amount carried at close of period
Land and improvements				4,473
Buildings and improvements				17,650
Total	$ 22,123			22,123
Accumulated depreciation	$ (10,455)			(10,455)
Date of construction	1974
Date acquired	Oct-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 22,123
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 10,455
Unencumbered Apartment Communities | Belmont Terrace | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Belmont Terrace | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bennett Lofts
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	165
Initial cost
Land				21,771
Buildings and improvements				50,800
Costs capitalized subsequent to acquisition				30,939
Gross amount carried at close of period
Land and improvements				28,371
Buildings and improvements				75,139
Total	$ 103,510			103,510
Accumulated depreciation	$ (22,577)			(22,577)
Date of construction	2004
Date acquired	Dec-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 103,510
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 22,577
Unencumbered Apartment Communities | Bennett Lofts | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bennett Lofts | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bernardo Crest
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	216
Initial cost
Land				10,802
Buildings and improvements				43,209
Costs capitalized subsequent to acquisition				5,214
Gross amount carried at close of period
Land and improvements				10,802
Buildings and improvements				48,423
Total	$ 59,225			59,225
Accumulated depreciation	$ (12,642)			(12,642)
Date of construction	1988
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 59,225
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,642
Unencumbered Apartment Communities | Bernardo Crest | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Bernardo Crest | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bonita Cedars
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	120
Initial cost
Land				2,496
Buildings and improvements				9,913
Costs capitalized subsequent to acquisition				5,834
Gross amount carried at close of period
Land and improvements				2,503
Buildings and improvements				15,740
Total	$ 18,243			18,243
Accumulated depreciation	$ (9,541)			(9,541)
Date of construction	1983
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,243
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,541
Unencumbered Apartment Communities | Bonita Cedars | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bonita Cedars | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Boulevard
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	172
Initial cost
Land				3,520
Buildings and improvements				8,182
Costs capitalized subsequent to acquisition				14,651
Gross amount carried at close of period
Land and improvements				3,580
Buildings and improvements				22,773
Total	$ 26,353			26,353
Accumulated depreciation	$ (18,916)			(18,916)
Date of construction	1978
Date acquired	Jan-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,353
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,916
Unencumbered Apartment Communities | Boulevard | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Boulevard | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Brookside Oaks
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	170
Initial cost
Land				7,301
Buildings and improvements				16,310
Costs capitalized subsequent to acquisition				27,349
Gross amount carried at close of period
Land and improvements				10,328
Buildings and improvements				40,632
Total	$ 50,960			50,960
Accumulated depreciation	$ (26,656)			(26,656)
Date of construction	1973
Date acquired	Jun-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 50,960
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,656
Unencumbered Apartment Communities | Bridle Trails
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	108
Initial cost
Land				1,500
Buildings and improvements				5,930
Costs capitalized subsequent to acquisition				6,690
Gross amount carried at close of period
Land and improvements				1,531
Buildings and improvements				12,589
Total	$ 14,120			14,120
Accumulated depreciation	$ (9,424)			(9,424)
Date of construction	1986
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 14,120
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,424
Unencumbered Apartment Communities | Bridle Trails | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bridle Trails | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Brighton Ridge
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	264
Initial cost
Land				2,623
Buildings and improvements				10,800
Costs capitalized subsequent to acquisition				7,010
Gross amount carried at close of period
Land and improvements				2,656
Buildings and improvements				17,777
Total	$ 20,433			20,433
Accumulated depreciation	$ (13,419)			(13,419)
Date of construction	1986
Date acquired	Dec-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 20,433
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,419
Unencumbered Apartment Communities | Brighton Ridge | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Brighton Ridge | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bristol Commons
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	188
Initial cost
Land				5,278
Buildings and improvements				11,853
Costs capitalized subsequent to acquisition				10,433
Gross amount carried at close of period
Land and improvements				5,293
Buildings and improvements				22,271
Total	$ 27,564			27,564
Accumulated depreciation	$ (16,949)			(16,949)
Date of construction	1989
Date acquired	Jan-95
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 27,564
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 16,949
Unencumbered Apartment Communities | Bristol Commons | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bristol Commons | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Bunker Hill
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	456
Initial cost
Land				11,498
Buildings and improvements				27,871
Costs capitalized subsequent to acquisition				96,132
Gross amount carried at close of period
Land and improvements				11,639
Buildings and improvements				123,862
Total	$ 135,501			135,501
Accumulated depreciation	$ (79,005)			(79,005)
Date of construction	1968
Date acquired	Mar-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 135,501
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 79,005
Unencumbered Apartment Communities | Bunker Hill | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Bunker Hill | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Camarillo Oaks
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	564
Initial cost
Land				10,953
Buildings and improvements				25,254
Costs capitalized subsequent to acquisition				8,869
Gross amount carried at close of period
Land and improvements				11,075
Buildings and improvements				34,001
Total	$ 45,076			45,076
Accumulated depreciation	$ (26,629)			(26,629)
Date of construction	1985
Date acquired	Jul-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 45,076
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,629
Unencumbered Apartment Communities | Camarillo Oaks | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Camarillo Oaks | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Cambridge Park
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	320
Initial cost
Land				18,185
Buildings and improvements				72,739
Costs capitalized subsequent to acquisition				4,120
Gross amount carried at close of period
Land and improvements				18,185
Buildings and improvements				76,859
Total	$ 95,044			95,044
Accumulated depreciation	$ (19,617)			(19,617)
Date of construction	1998
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 95,044
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 19,617
Unencumbered Apartment Communities | Cambridge Park | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Cambridge Park | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Camino Ruiz Square
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	159
Initial cost
Land				6,871
Buildings and improvements				26,119
Costs capitalized subsequent to acquisition				2,543
Gross amount carried at close of period
Land and improvements				6,931
Buildings and improvements				28,602
Total	$ 35,533			35,533
Accumulated depreciation	$ (13,801)			(13,801)
Date of construction	1990
Date acquired	Dec-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 35,533
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,801
Unencumbered Apartment Communities | Camino Ruiz Square | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Camino Ruiz Square | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Canyon Oaks
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	250
Initial cost
Land				19,088
Buildings and improvements				44,473
Costs capitalized subsequent to acquisition				7,051
Gross amount carried at close of period
Land and improvements				19,088
Buildings and improvements				51,524
Total	$ 70,612			70,612
Accumulated depreciation	$ (23,554)			(23,554)
Date of construction	2005
Date acquired	May-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 70,612
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 23,554
Unencumbered Apartment Communities | Canyon Oaks | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Canyon Oaks | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Canyon Pointe
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	250
Initial cost
Land				4,692
Buildings and improvements				18,288
Costs capitalized subsequent to acquisition				9,479
Gross amount carried at close of period
Land and improvements				4,693
Buildings and improvements				27,766
Total	$ 32,459			32,459
Accumulated depreciation	$ (17,295)			(17,295)
Date of construction	1990
Date acquired	Oct-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,459
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 17,295
Unencumbered Apartment Communities | Canyon Pointe | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Canyon Pointe | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Capri at Sunny Hills
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	102
Initial cost
Land				3,337
Buildings and improvements				13,320
Costs capitalized subsequent to acquisition				9,690
Gross amount carried at close of period
Land and improvements				4,048
Buildings and improvements				22,299
Total	$ 26,347			26,347
Accumulated depreciation	$ (15,327)			(15,327)
Date of construction	1961
Date acquired	Sep-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,347
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,327
Unencumbered Apartment Communities | Capri at Sunny Hills | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Capri at Sunny Hills | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Carmel Creek
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	348
Initial cost
Land				26,842
Buildings and improvements				107,368
Costs capitalized subsequent to acquisition				8,308
Gross amount carried at close of period
Land and improvements				26,842
Buildings and improvements				115,676
Total	$ 142,518			142,518
Accumulated depreciation	$ (30,274)			(30,274)
Date of construction	2000
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 142,518
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 30,274
Unencumbered Apartment Communities | Carmel Creek | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Carmel Creek | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Carnel Landing
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	356
Initial cost
Land				16,725
Buildings and improvements				66,901
Costs capitalized subsequent to acquisition				10,506
Gross amount carried at close of period
Land and improvements				16,725
Buildings and improvements				77,407
Total	$ 94,132			94,132
Accumulated depreciation	$ (20,335)			(20,335)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 94,132
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 20,335
Unencumbered Apartment Communities | Carnel Landing | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Carnel Landing | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Carnel Summit
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	246
Initial cost
Land				14,968
Buildings and improvements				59,871
Costs capitalized subsequent to acquisition				4,545
Gross amount carried at close of period
Land and improvements				14,968
Buildings and improvements				64,416
Total	$ 79,384			79,384
Accumulated depreciation	$ (16,376)			(16,376)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 79,384
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 16,376
Unencumbered Apartment Communities | Carnel Summit | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Carnel Summit | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Castle Creek
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	216
Initial cost
Land				4,149
Buildings and improvements				16,028
Costs capitalized subsequent to acquisition				5,677
Gross amount carried at close of period
Land and improvements				4,833
Buildings and improvements				21,021
Total	$ 25,854			25,854
Accumulated depreciation	$ (15,908)			(15,908)
Date of construction	1998
Date acquired	Dec-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 25,854
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,908
Unencumbered Apartment Communities | Castle Creek | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Castle Creek | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Catalina Gardens
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	128
Initial cost
Land				6,714
Buildings and improvements				26,856
Costs capitalized subsequent to acquisition				2,490
Gross amount carried at close of period
Land and improvements				6,714
Buildings and improvements				29,346
Total	$ 36,060			36,060
Accumulated depreciation	$ (7,343)			(7,343)
Date of construction	1987
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 36,060
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,343
Unencumbered Apartment Communities | Catalina Gardens | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Catalina Gardens | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | CBC Apartments and The Sweeps
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	239
Initial cost
Land				11,841
Buildings and improvements				45,320
Costs capitalized subsequent to acquisition				6,922
Gross amount carried at close of period
Land and improvements				11,906
Buildings and improvements				52,177
Total	$ 64,083			64,083
Accumulated depreciation	$ (28,445)			(28,445)
Date of construction	1962
Date acquired	Jan-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 64,083
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 28,445
Unencumbered Apartment Communities | CBC Apartments and The Sweeps | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | CBC Apartments and The Sweeps | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Cedar Terrace
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	180
Initial cost
Land				5,543
Buildings and improvements				16,442
Costs capitalized subsequent to acquisition				8,601
Gross amount carried at close of period
Land and improvements				5,652
Buildings and improvements				24,934
Total	$ 30,586			30,586
Accumulated depreciation	$ (13,973)			(13,973)
Date of construction	1984
Date acquired	Jan-05
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,586
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,973
Unencumbered Apartment Communities | Cedar Terrace | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Cedar Terrace | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | CentrePointe
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	224
Initial cost
Land				3,405
Buildings and improvements				7,743
Costs capitalized subsequent to acquisition				22,335
Gross amount carried at close of period
Land and improvements				3,442
Buildings and improvements				30,041
Total	$ 33,483			33,483
Accumulated depreciation	$ (22,318)			(22,318)
Date of construction	1974
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 33,483
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 22,318
Unencumbered Apartment Communities | CentrePointe | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | CentrePointe | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Chestnut Street Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	96
Initial cost
Land				6,582
Buildings and improvements				15,689
Costs capitalized subsequent to acquisition				2,277
Gross amount carried at close of period
Land and improvements				6,582
Buildings and improvements				17,966
Total	$ 24,548			24,548
Accumulated depreciation	$ (7,884)			(7,884)
Date of construction	2002
Date acquired	Jul-08
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,548
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,884
Unencumbered Apartment Communities | Chestnut Street Apartments | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Chestnut Street Apartments | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | City View
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	572
Initial cost
Land				9,883
Buildings and improvements				37,670
Costs capitalized subsequent to acquisition				32,941
Gross amount carried at close of period
Land and improvements				10,350
Buildings and improvements				70,144
Total	$ 80,494			80,494
Accumulated depreciation	$ (53,374)			(53,374)
Date of construction	1975
Date acquired	Mar-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 80,494
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 53,374
Unencumbered Apartment Communities | Collins on Pine
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	76
Initial cost
Land				7,276
Buildings and improvements				22,226
Costs capitalized subsequent to acquisition				688
Gross amount carried at close of period
Land and improvements				7,276
Buildings and improvements				22,914
Total	$ 30,190			30,190
Accumulated depreciation	$ (5,180)			(5,180)
Date of construction	2013
Date acquired	May-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,190
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 5,180
Unencumbered Apartment Communities | Collins on Pine | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Collins on Pine | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Connolly Station
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	309
Initial cost
Land				19,949
Buildings and improvements				123,428
Costs capitalized subsequent to acquisition				1,545
Gross amount carried at close of period
Land and improvements				19,949
Buildings and improvements				124,973
Total	$ 144,922			144,922
Accumulated depreciation	$ (4,139)			(4,139)
Date of construction	2014
Date acquired	Jan-20
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 144,922
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 4,139
Unencumbered Apartment Communities | Connolly Station | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Connolly Station | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Corbella at Juanita Bay
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	169
Initial cost
Land				5,801
Buildings and improvements				17,415
Costs capitalized subsequent to acquisition				3,961
Gross amount carried at close of period
Land and improvements				5,801
Buildings and improvements				21,376
Total	$ 27,177			27,177
Accumulated depreciation	$ (8,273)			(8,273)
Date of construction	1978
Date acquired	Nov-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 27,177
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 8,273
Unencumbered Apartment Communities | Corbella at Juanita Bay | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Corbella at Juanita Bay | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Cortesia
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	308
Initial cost
Land				13,912
Buildings and improvements				55,649
Costs capitalized subsequent to acquisition				3,302
Gross amount carried at close of period
Land and improvements				13,912
Buildings and improvements				58,951
Total	$ 72,863			72,863
Accumulated depreciation	$ (14,944)			(14,944)
Date of construction	1999
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 72,863
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 14,944
Unencumbered Apartment Communities | Cortesia | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Cortesia | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Country Villas
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	180
Initial cost
Land				4,174
Buildings and improvements				16,583
Costs capitalized subsequent to acquisition				5,547
Gross amount carried at close of period
Land and improvements				4,187
Buildings and improvements				22,117
Total	$ 26,304			26,304
Accumulated depreciation	$ (13,934)			(13,934)
Date of construction	1976
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,304
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,934
Unencumbered Apartment Communities | Country Villas | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Country Villas | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Courtyard off Main
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	110
Initial cost
Land				7,465
Buildings and improvements				21,405
Costs capitalized subsequent to acquisition				5,047
Gross amount carried at close of period
Land and improvements				7,465
Buildings and improvements				26,452
Total	$ 33,917			33,917
Accumulated depreciation	$ (10,190)			(10,190)
Date of construction	2000
Date acquired	Oct-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 33,917
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 10,190
Unencumbered Apartment Communities | Courtyard off Main | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Courtyard off Main | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Crow Canyon
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	400
Initial cost
Land				37,579
Buildings and improvements				87,685
Costs capitalized subsequent to acquisition				12,923
Gross amount carried at close of period
Land and improvements				37,579
Buildings and improvements				100,608
Total	$ 138,187			138,187
Accumulated depreciation	$ (26,738)			(26,738)
Date of construction	1992
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 138,187
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,738
Unencumbered Apartment Communities | Crow Canyon | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Crow Canyon | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Deer Valley
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	171
Initial cost
Land				21,478
Buildings and improvements				50,116
Costs capitalized subsequent to acquisition				3,644
Gross amount carried at close of period
Land and improvements				21,478
Buildings and improvements				53,760
Total	$ 75,238			75,238
Accumulated depreciation	$ (13,744)			(13,744)
Date of construction	1996
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 75,238
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,744
Unencumbered Apartment Communities | Deer Valley | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Deer Valley | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Devonshire
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	276
Initial cost
Land				3,470
Buildings and improvements				13,786
Costs capitalized subsequent to acquisition				6,533
Gross amount carried at close of period
Land and improvements				3,482
Buildings and improvements				20,307
Total	$ 23,789			23,789
Accumulated depreciation	$ (12,163)			(12,163)
Date of construction	1988
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 23,789
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,163
Unencumbered Apartment Communities | Devonshire | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Devonshire | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Domaine
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	92
Initial cost
Land				9,059
Buildings and improvements				27,177
Costs capitalized subsequent to acquisition				1,545
Gross amount carried at close of period
Land and improvements				9,059
Buildings and improvements				28,722
Total	$ 37,781			37,781
Accumulated depreciation	$ (8,376)			(8,376)
Date of construction	2009
Date acquired	Sep-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 37,781
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 8,376
Unencumbered Apartment Communities | Elevation
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	158
Initial cost
Land				4,758
Buildings and improvements				14,285
Costs capitalized subsequent to acquisition				7,372
Gross amount carried at close of period
Land and improvements				4,757
Buildings and improvements				21,658
Total	$ 26,415			26,415
Accumulated depreciation	$ (10,931)			(10,931)
Date of construction	1986
Date acquired	Jun-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,415
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 10,931
Unencumbered Apartment Communities | Elevation | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Elevation | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Ellington
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	220
Initial cost
Land				15,066
Buildings and improvements				45,249
Costs capitalized subsequent to acquisition				4,089
Gross amount carried at close of period
Land and improvements				15,066
Buildings and improvements				49,338
Total	$ 64,404			64,404
Accumulated depreciation	$ (11,978)			(11,978)
Date of construction	1994
Date acquired	Jul-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 64,404
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,978
Unencumbered Apartment Communities | Ellington | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Ellington | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Emerald Pointe
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	160
Initial cost
Land				8,458
Buildings and improvements				33,832
Costs capitalized subsequent to acquisition				2,404
Gross amount carried at close of period
Land and improvements				8,458
Buildings and improvements				36,236
Total	$ 44,694			44,694
Accumulated depreciation	$ (9,304)			(9,304)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 44,694
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,304
Unencumbered Apartment Communities | Emerald Pointe | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Emerald Pointe | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Emerald Ridge
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	180
Initial cost
Land				3,449
Buildings and improvements				7,801
Costs capitalized subsequent to acquisition				6,915
Gross amount carried at close of period
Land and improvements				3,449
Buildings and improvements				14,716
Total	$ 18,165			18,165
Accumulated depreciation	$ (11,762)			(11,762)
Date of construction	1987
Date acquired	Nov-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,165
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,762
Unencumbered Apartment Communities | Emerald Ridge | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Emerald Ridge | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Emerson Valley Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	144
Initial cost
Land				13,378
Buildings and improvements				53,240
Costs capitalized subsequent to acquisition				1,349
Gross amount carried at close of period
Land and improvements				13,378
Buildings and improvements				54,589
Total	$ 67,967			67,967
Accumulated depreciation	$ (7,825)			(7,825)
Date of construction	2012
Date acquired	Dec-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 67,967
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,825
Unencumbered Apartment Communities | Emerson Valley Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Emerson Valley Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Emme
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	190
Initial cost
Land				15,039
Buildings and improvements				80,532
Costs capitalized subsequent to acquisition				357
Gross amount carried at close of period
Land and improvements				15,039
Buildings and improvements				80,889
Total	$ 95,928			95,928
Accumulated depreciation	$ (2,709)			(2,709)
Date of construction	2015
Date acquired	Jan-20
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 95,928
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 2,709
Unencumbered Apartment Communities | Emme | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Emme | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Enso
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	183
Initial cost
Land				21,397
Buildings and improvements				71,135
Costs capitalized subsequent to acquisition				1,907
Gross amount carried at close of period
Land and improvements				21,397
Buildings and improvements				73,042
Total	$ 94,439			94,439
Accumulated depreciation	$ (13,258)			(13,258)
Date of construction	2014
Date acquired	Dec-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 94,439
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,258
Unencumbered Apartment Communities | Enso | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Enso | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Epic
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	769
Initial cost
Land				89,111
Buildings and improvements				307,769
Costs capitalized subsequent to acquisition				509
Gross amount carried at close of period
Land and improvements				89,111
Buildings and improvements				308,278
Total	$ 397,389			397,389
Accumulated depreciation	$ (10,261)			(10,261)
Date of construction	2013
Date acquired	Jan-20
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 397,389
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 10,261
Unencumbered Apartment Communities | Epic | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Epic | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Esplanade
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	278
Initial cost
Land				18,170
Buildings and improvements				40,086
Costs capitalized subsequent to acquisition				16,209
Gross amount carried at close of period
Land and improvements				18,429
Buildings and improvements				56,036
Total	$ 74,465			74,465
Accumulated depreciation	$ (32,656)			(32,656)
Date of construction	2002
Date acquired	Apr-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 74,465
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 32,656
Unencumbered Apartment Communities | Esplanade | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Esplanade | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Essex Skyline
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	350
Initial cost
Land				21,537
Buildings and improvements				146,099
Costs capitalized subsequent to acquisition				12,601
Gross amount carried at close of period
Land and improvements				21,537
Buildings and improvements				158,700
Total	$ 180,237			180,237
Accumulated depreciation	$ (48,170)			(48,170)
Date of construction	2008
Date acquired	Apr-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 180,237
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 48,170
Unencumbered Apartment Communities | Essex Skyline | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Essex Skyline | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Evergreen Heights
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	200
Initial cost
Land				3,566
Buildings and improvements				13,395
Costs capitalized subsequent to acquisition				7,339
Gross amount carried at close of period
Land and improvements				3,649
Buildings and improvements				20,651
Total	$ 24,300			24,300
Accumulated depreciation	$ (15,822)			(15,822)
Date of construction	1990
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,300
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,822
Unencumbered Apartment Communities | Evergreen Heights | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Evergreen Heights | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Fairhaven Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	164
Initial cost
Land				2,626
Buildings and improvements				10,485
Costs capitalized subsequent to acquisition				10,243
Gross amount carried at close of period
Land and improvements				2,957
Buildings and improvements				20,397
Total	$ 23,354			23,354
Accumulated depreciation	$ (13,581)			(13,581)
Date of construction	1970
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 23,354
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,581
Unencumbered Apartment Communities | Fairway Apartments at Big Canyon
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	74
Initial cost
Land				0
Buildings and improvements				7,850
Costs capitalized subsequent to acquisition				8,513
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				16,363
Total	$ 16,363			16,363
Accumulated depreciation	$ (12,710)			(12,710)
Date of construction	1972
Date acquired	Jun-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 16,363
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,710
Unencumbered Apartment Communities | Fairway Apartments at Big Canyon | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Fairway Apartments at Big Canyon | Maximum
Gross amount carried at close of period
Life used for depreciation	28 years
Unencumbered Apartment Communities | Fairwood Pond
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	194
Initial cost
Land				5,296
Buildings and improvements				15,564
Costs capitalized subsequent to acquisition				4,599
Gross amount carried at close of period
Land and improvements				5,297
Buildings and improvements				20,162
Total	$ 25,459			25,459
Accumulated depreciation	$ (11,530)			(11,530)
Date of construction	1997
Date acquired	Oct-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 25,459
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,530
Unencumbered Apartment Communities | Fairwood Pond | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Fairwood Pond | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Foothill Commons
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	394
Initial cost
Land				2,435
Buildings and improvements				9,821
Costs capitalized subsequent to acquisition				41,978
Gross amount carried at close of period
Land and improvements				2,440
Buildings and improvements				51,794
Total	$ 54,234			54,234
Accumulated depreciation	$ (47,403)			(47,403)
Date of construction	1978
Date acquired	Mar-90
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 54,234
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 47,403
Unencumbered Apartment Communities | Foothill Commons | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Foothill Commons | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Foothill Gardens/Twin Creeks
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	176
Initial cost
Land				5,875
Buildings and improvements				13,992
Costs capitalized subsequent to acquisition				12,289
Gross amount carried at close of period
Land and improvements				5,964
Buildings and improvements				26,192
Total	$ 32,156			32,156
Accumulated depreciation	$ (19,884)			(19,884)
Date of construction	1985
Date acquired	Feb-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,156
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 19,884
Unencumbered Apartment Communities | Foothill Gardens/Twin Creeks | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Foothill Gardens/Twin Creeks | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Forest View
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	192
Initial cost
Land				3,731
Buildings and improvements				14,530
Costs capitalized subsequent to acquisition				3,713
Gross amount carried at close of period
Land and improvements				3,731
Buildings and improvements				18,243
Total	$ 21,974			21,974
Accumulated depreciation	$ (10,629)			(10,629)
Date of construction	1998
Date acquired	Oct-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 21,974
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 10,629
Unencumbered Apartment Communities | Forest View | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Forest View | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Foster's Landing
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	490
Initial cost
Land				61,714
Buildings and improvements				144,000
Costs capitalized subsequent to acquisition				11,178
Gross amount carried at close of period
Land and improvements				61,714
Buildings and improvements				155,178
Total	$ 216,892			216,892
Accumulated depreciation	$ (41,241)			(41,241)
Date of construction	1987
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 216,892
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 41,241
Unencumbered Apartment Communities | Fountain Court
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	320
Initial cost
Land				6,702
Buildings and improvements				27,306
Costs capitalized subsequent to acquisition				13,573
Gross amount carried at close of period
Land and improvements				6,985
Buildings and improvements				40,596
Total	$ 47,581			47,581
Accumulated depreciation	$ (29,905)			(29,905)
Date of construction	2000
Date acquired	Mar-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 47,581
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 29,905
Unencumbered Apartment Communities | Fountain Court | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Fountain Court | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Fountain At Riveroaks
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	226
Initial cost
Land				26,046
Buildings and improvements				60,773
Costs capitalized subsequent to acquisition				5,897
Gross amount carried at close of period
Land and improvements				26,046
Buildings and improvements				66,670
Total	$ 92,716			92,716
Accumulated depreciation	$ (17,559)			(17,559)
Date of construction	1990
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 92,716
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 17,559
Unencumbered Apartment Communities | Fountain At Riveroaks | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Fountain At Riveroaks | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Fourth & U
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	171
Initial cost
Land				8,879
Buildings and improvements				52,351
Costs capitalized subsequent to acquisition				4,337
Gross amount carried at close of period
Land and improvements				8,879
Buildings and improvements				56,688
Total	$ 65,567			65,567
Accumulated depreciation	$ (21,596)			(21,596)
Date of construction	2010
Date acquired	Apr-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 65,567
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 21,596
Unencumbered Apartment Communities | Fourth & U | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Fourth & U | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Fox Plaza
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	445
Initial cost
Land				39,731
Buildings and improvements				92,706
Costs capitalized subsequent to acquisition				39,712
Gross amount carried at close of period
Land and improvements				39,731
Buildings and improvements				132,418
Total	$ 172,149			172,149
Accumulated depreciation	$ (41,715)			(41,715)
Date of construction	1968
Date acquired	Feb-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 172,149
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 41,715
Unencumbered Apartment Communities | Fox Plaza | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Fox Plaza | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Henley I/The Henley II
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	215
Initial cost
Land				6,695
Buildings and improvements				16,753
Costs capitalized subsequent to acquisition				28,607
Gross amount carried at close of period
Land and improvements				6,733
Buildings and improvements				45,322
Total	$ 52,055			52,055
Accumulated depreciation	$ (30,235)			(30,235)
Date of construction	1970
Date acquired	Jun-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 52,055
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 30,235
Unencumbered Apartment Communities | The Henley I/The Henley II | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Henley I/The Henley II | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Highlands at Wynhaven
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	333
Initial cost
Land				16,271
Buildings and improvements				48,932
Costs capitalized subsequent to acquisition				15,477
Gross amount carried at close of period
Land and improvements				16,271
Buildings and improvements				64,409
Total	$ 80,680			80,680
Accumulated depreciation	$ (30,874)			(30,874)
Date of construction	2000
Date acquired	Aug-08
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 80,680
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 30,874
Unencumbered Apartment Communities | Highlands at Wynhaven | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Highlands at Wynhaven | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Hillcrest Park
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	608
Initial cost
Land				15,318
Buildings and improvements				40,601
Costs capitalized subsequent to acquisition				22,105
Gross amount carried at close of period
Land and improvements				15,755
Buildings and improvements				62,269
Total	$ 78,024			78,024
Accumulated depreciation	$ (45,189)			(45,189)
Date of construction	1973
Date acquired	Mar-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 78,024
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 45,189
Unencumbered Apartment Communities | Hillcrest Park | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Hillcrest Park | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Hillsdale Garden
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	697
Initial cost
Land				22,000
Buildings and improvements				94,681
Costs capitalized subsequent to acquisition				29,391
Gross amount carried at close of period
Land and improvements				22,000
Buildings and improvements				124,072
Total	$ 146,072			146,072
Accumulated depreciation	$ (64,193)			(64,193)
Date of construction	1948
Date acquired	Sep-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 146,072
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 64,193
Unencumbered Apartment Communities | Hillsdale Garden | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Hillsdale Garden | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Hope Ranch
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	108
Initial cost
Land				4,078
Buildings and improvements				16,877
Costs capitalized subsequent to acquisition				3,144
Gross amount carried at close of period
Land and improvements				4,208
Buildings and improvements				19,891
Total	$ 24,099			24,099
Accumulated depreciation	$ (9,564)			(9,564)
Date of construction	1965
Date acquired	Mar-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,099
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,564
Unencumbered Apartment Communities | Hope Ranch | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Hope Ranch | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Huntington Breakers
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	342
Initial cost
Land				9,306
Buildings and improvements				22,720
Costs capitalized subsequent to acquisition				22,039
Gross amount carried at close of period
Land and improvements				9,315
Buildings and improvements				44,750
Total	$ 54,065			54,065
Accumulated depreciation	$ (35,095)			(35,095)
Date of construction	1984
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 54,065
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 35,095
Unencumbered Apartment Communities | Huntington Breakers | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Huntington Breakers | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Inglenook Court
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	224
Initial cost
Land				3,467
Buildings and improvements				7,881
Costs capitalized subsequent to acquisition				8,603
Gross amount carried at close of period
Land and improvements				3,474
Buildings and improvements				16,477
Total	$ 19,951			19,951
Accumulated depreciation	$ (13,915)			(13,915)
Date of construction	1985
Date acquired	Oct-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 19,951
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,915
Unencumbered Apartment Communities | Inglenook Court | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Inglenook Court | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Lafayette Highlands
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	150
Initial cost
Land				17,774
Buildings and improvements				41,473
Costs capitalized subsequent to acquisition				4,292
Gross amount carried at close of period
Land and improvements				17,774
Buildings and improvements				45,765
Total	$ 63,539			63,539
Accumulated depreciation	$ (11,649)			(11,649)
Date of construction	1973
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 63,539
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,649
Unencumbered Apartment Communities | Lafayette Highlands | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Lafayette Highlands | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Lakeshore Landing
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	308
Initial cost
Land				38,155
Buildings and improvements				89,028
Costs capitalized subsequent to acquisition				9,182
Gross amount carried at close of period
Land and improvements				38,155
Buildings and improvements				98,210
Total	$ 136,365			136,365
Accumulated depreciation	$ (26,612)			(26,612)
Date of construction	1988
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 136,365
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,612
Unencumbered Apartment Communities | Lakeshore Landing | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Lakeshore Landing | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Laurels at Mill Creek
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	164
Initial cost
Land				1,559
Buildings and improvements				6,430
Costs capitalized subsequent to acquisition				8,586
Gross amount carried at close of period
Land and improvements				1,595
Buildings and improvements				14,980
Total	$ 16,575			16,575
Accumulated depreciation	$ (11,277)			(11,277)
Date of construction	1981
Date acquired	Dec-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 16,575
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,277
Unencumbered Apartment Communities | Laurels at Mill Creek | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Laurels at Mill Creek | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Lawrence Station
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	336
Initial cost
Land				45,532
Buildings and improvements				106,735
Costs capitalized subsequent to acquisition				2,494
Gross amount carried at close of period
Land and improvements				45,532
Buildings and improvements				109,229
Total	$ 154,761			154,761
Accumulated depreciation	$ (30,819)			(30,819)
Date of construction	2012
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 154,761
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 30,819
Unencumbered Apartment Communities | Lawrence Station | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Lawrence Station | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Le Parc
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	140
Initial cost
Land				3,090
Buildings and improvements				7,421
Costs capitalized subsequent to acquisition				14,181
Gross amount carried at close of period
Land and improvements				3,092
Buildings and improvements				21,600
Total	$ 24,692			24,692
Accumulated depreciation	$ (17,358)			(17,358)
Date of construction	1975
Date acquired	Feb-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,692
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 17,358
Unencumbered Apartment Communities | Le Parc | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Le Parc | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Marbrisa
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	202
Initial cost
Land				4,700
Buildings and improvements				18,605
Costs capitalized subsequent to acquisition				10,150
Gross amount carried at close of period
Land and improvements				4,760
Buildings and improvements				28,695
Total	$ 33,455			33,455
Accumulated depreciation	$ (18,760)			(18,760)
Date of construction	1987
Date acquired	Sep-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 33,455
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,760
Unencumbered Apartment Communities | Marbrisa | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Marbrisa | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Marina City Club
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	101
Initial cost
Land				0
Buildings and improvements				28,167
Costs capitalized subsequent to acquisition				34,572
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				62,739
Total	$ 62,739			62,739
Accumulated depreciation	$ (31,601)			(31,601)
Date of construction	1971
Date acquired	Jan-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 62,739
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 31,601
Unencumbered Apartment Communities | Marina City Club | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Marina City Club | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Marina Cove
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	292
Initial cost
Land				5,320
Buildings and improvements				16,431
Costs capitalized subsequent to acquisition				16,263
Gross amount carried at close of period
Land and improvements				5,324
Buildings and improvements				32,690
Total	$ 38,014			38,014
Accumulated depreciation	$ (27,925)			(27,925)
Date of construction	1974
Date acquired	Jun-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 38,014
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 27,925
Unencumbered Apartment Communities | Marina Cove | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Marina Cove | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mariner's Place
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	105
Initial cost
Land				1,555
Buildings and improvements				6,103
Costs capitalized subsequent to acquisition				2,679
Gross amount carried at close of period
Land and improvements				1,562
Buildings and improvements				8,775
Total	$ 10,337			10,337
Accumulated depreciation	$ (6,362)			(6,362)
Date of construction	1987
Date acquired	May-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 10,337
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 6,362
Unencumbered Apartment Communities | Mariner's Place | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Mariner's Place | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | MB 360
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	360
Initial cost
Land				42,001
Buildings and improvements				212,648
Costs capitalized subsequent to acquisition				12,308
Gross amount carried at close of period
Land and improvements				42,001
Buildings and improvements				224,956
Total	$ 266,957			266,957
Accumulated depreciation	$ (50,304)			(50,304)
Date of construction	2014
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 266,957
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 50,304
Unencumbered Apartment Communities | MB 360 | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | MB 360 | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mesa Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	133
Initial cost
Land				1,888
Buildings and improvements				7,498
Costs capitalized subsequent to acquisition				2,734
Gross amount carried at close of period
Land and improvements				1,894
Buildings and improvements				10,226
Total	$ 12,120			12,120
Accumulated depreciation	$ (6,127)			(6,127)
Date of construction	1963
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 12,120
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 6,127
Unencumbered Apartment Communities | Mesa Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Mesa Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mill Creek at Windermere
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	400
Initial cost
Land				29,551
Buildings and improvements				69,032
Costs capitalized subsequent to acquisition				7,370
Gross amount carried at close of period
Land and improvements				29,551
Buildings and improvements				76,402
Total	$ 105,953			105,953
Accumulated depreciation	$ (34,899)			(34,899)
Date of construction	2005
Date acquired	Sep-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 105,953
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 34,899
Unencumbered Apartment Communities | Mill Creek at Windermere | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Mill Creek at Windermere | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mio
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	103
Initial cost
Land				11,012
Buildings and improvements				39,982
Costs capitalized subsequent to acquisition				675
Gross amount carried at close of period
Land and improvements				11,012
Buildings and improvements				40,657
Total	$ 51,669			51,669
Accumulated depreciation	$ (7,166)			(7,166)
Date of construction	2015
Date acquired	Jan-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,669
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,166
Unencumbered Apartment Communities | Mio | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Mio | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mirabella
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	188
Initial cost
Land				6,180
Buildings and improvements				26,673
Costs capitalized subsequent to acquisition				17,242
Gross amount carried at close of period
Land and improvements				6,270
Buildings and improvements				43,825
Total	$ 50,095			50,095
Accumulated depreciation	$ (28,017)			(28,017)
Date of construction	2000
Date acquired	May-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 50,095
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 28,017
Unencumbered Apartment Communities | Mirabella | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Mirabella | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mira Monte
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	354
Initial cost
Land				7,165
Buildings and improvements				28,459
Costs capitalized subsequent to acquisition				12,402
Gross amount carried at close of period
Land and improvements				7,186
Buildings and improvements				40,840
Total	$ 48,026			48,026
Accumulated depreciation	$ (26,833)			(26,833)
Date of construction	1982
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 48,026
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,833
Unencumbered Apartment Communities | Mira Monte | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Mira Monte | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Miracle Mile Marbella
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	236
Initial cost
Land				7,791
Buildings and improvements				23,075
Costs capitalized subsequent to acquisition				15,609
Gross amount carried at close of period
Land and improvements				7,886
Buildings and improvements				38,589
Total	$ 46,475			46,475
Accumulated depreciation	$ (29,348)			(29,348)
Date of construction	1988
Date acquired	Aug-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 46,475
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 29,348
Unencumbered Apartment Communities | Miracle Mile Marbella | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Miracle Mile Marbella | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mission Hills
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	282
Initial cost
Land				10,099
Buildings and improvements				38,778
Costs capitalized subsequent to acquisition				11,525
Gross amount carried at close of period
Land and improvements				10,167
Buildings and improvements				50,235
Total	$ 60,402			60,402
Accumulated depreciation	$ (26,979)			(26,979)
Date of construction	1984
Date acquired	Jul-05
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 60,402
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 26,979
Unencumbered Apartment Communities | Mission Hills | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Mission Hills | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mission Peaks
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	453
Initial cost
Land				46,499
Buildings and improvements				108,498
Costs capitalized subsequent to acquisition				8,474
Gross amount carried at close of period
Land and improvements				46,499
Buildings and improvements				116,972
Total	$ 163,471			163,471
Accumulated depreciation	$ (29,818)			(29,818)
Date of construction	1995
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 163,471
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 29,818
Unencumbered Apartment Communities | Mission Peaks | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Mission Peaks | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Mission Peaks II
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	336
Initial cost
Land				31,429
Buildings and improvements				73,334
Costs capitalized subsequent to acquisition				8,388
Gross amount carried at close of period
Land and improvements				31,429
Buildings and improvements				81,722
Total	$ 113,151			113,151
Accumulated depreciation	$ (21,416)			(21,416)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 113,151
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 21,416
Unencumbered Apartment Communities | Mission Peaks II | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Mission Peaks II | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Montarosa
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	472
Initial cost
Land				26,697
Buildings and improvements				106,787
Costs capitalized subsequent to acquisition				7,521
Gross amount carried at close of period
Land and improvements				26,697
Buildings and improvements				114,308
Total	$ 141,005			141,005
Accumulated depreciation	$ (28,912)			(28,912)
Date of construction	1990
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 141,005
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 28,912
Unencumbered Apartment Communities | Montclaire
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	390
Initial cost
Land				4,842
Buildings and improvements				19,776
Costs capitalized subsequent to acquisition				28,355
Gross amount carried at close of period
Land and improvements				4,997
Buildings and improvements				47,976
Total	$ 52,973			52,973
Accumulated depreciation	$ (43,336)			(43,336)
Date of construction	1973
Date acquired	Dec-88
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 52,973
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 43,336
Unencumbered Apartment Communities | Montclaire | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Montclaire | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Montebello
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	248
Initial cost
Land				13,857
Buildings and improvements				41,575
Costs capitalized subsequent to acquisition				7,496
Gross amount carried at close of period
Land and improvements				13,858
Buildings and improvements				49,070
Total	$ 62,928			62,928
Accumulated depreciation	$ (15,854)			(15,854)
Date of construction	1996
Date acquired	Jul-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 62,928
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,854
Unencumbered Apartment Communities | Montejo
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	124
Initial cost
Land				1,925
Buildings and improvements				7,685
Costs capitalized subsequent to acquisition				4,490
Gross amount carried at close of period
Land and improvements				2,194
Buildings and improvements				11,906
Total	$ 14,100			14,100
Accumulated depreciation	$ (7,588)			(7,588)
Date of construction	1974
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 14,100
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,588
Unencumbered Apartment Communities | Monterey Villas
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	122
Initial cost
Land				2,349
Buildings and improvements				5,579
Costs capitalized subsequent to acquisition				7,169
Gross amount carried at close of period
Land and improvements				2,424
Buildings and improvements				12,673
Total	$ 15,097			15,097
Accumulated depreciation	$ (9,150)			(9,150)
Date of construction	1974
Date acquired	Jul-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 15,097
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,150
Unencumbered Apartment Communities | Monterey Villas | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Monterey Villas | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Muse
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	152
Initial cost
Land				7,822
Buildings and improvements				33,436
Costs capitalized subsequent to acquisition				3,659
Gross amount carried at close of period
Land and improvements				7,823
Buildings and improvements				37,094
Total	$ 44,917			44,917
Accumulated depreciation	$ (15,284)			(15,284)
Date of construction	2011
Date acquired	Feb-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 44,917
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,284
Unencumbered Apartment Communities | Muse | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Muse | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | 1000 Kiely
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	121
Initial cost
Land				9,359
Buildings and improvements				21,845
Costs capitalized subsequent to acquisition				8,669
Gross amount carried at close of period
Land and improvements				9,359
Buildings and improvements				30,514
Total	$ 39,873			39,873
Accumulated depreciation	$ (13,890)			(13,890)
Date of construction	1971
Date acquired	Mar-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 39,873
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,890
Unencumbered Apartment Communities | Palm Valley
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	1,099
Initial cost
Land				133,802
Buildings and improvements				312,205
Costs capitalized subsequent to acquisition				18,156
Gross amount carried at close of period
Land and improvements				133,802
Buildings and improvements				330,361
Total	$ 464,163			464,163
Accumulated depreciation	$ (48,807)			(48,807)
Date of construction	2008
Date acquired	Jan-17
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 464,163
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 48,807
Unencumbered Apartment Communities | Palm Valley | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Palm Valley | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Paragon Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	301
Initial cost
Land				32,230
Buildings and improvements				77,320
Costs capitalized subsequent to acquisition				2,583
Gross amount carried at close of period
Land and improvements				32,230
Buildings and improvements				79,903
Total	$ 112,133			112,133
Accumulated depreciation	$ (17,735)			(17,735)
Date of construction	2013
Date acquired	Jul-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 112,133
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 17,735
Unencumbered Apartment Communities | Paragon Apartments | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Paragon Apartments | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Park 20
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	197
Initial cost
Land				27,041
Buildings and improvements				89,281
Costs capitalized subsequent to acquisition				(1,340)
Gross amount carried at close of period
Land and improvements				26,607
Buildings and improvements				88,375
Total	$ 114,982			114,982
Accumulated depreciation	$ (2,983)			(2,983)
Date of construction	2015
Date acquired	Jan-20
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 114,982
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 2,983
Unencumbered Apartment Communities | Park 20 | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Park 20 | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Park Catalina
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	90
Initial cost
Land				4,710
Buildings and improvements				18,839
Costs capitalized subsequent to acquisition				3,628
Gross amount carried at close of period
Land and improvements				4,710
Buildings and improvements				22,467
Total	$ 27,177			27,177
Accumulated depreciation	$ (8,035)			(8,035)
Date of construction	2002
Date acquired	Jun-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 27,177
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 8,035
Unencumbered Apartment Communities | Park Catalina | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Park Catalina | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Park Highland
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	250
Initial cost
Land				9,391
Buildings and improvements				38,224
Costs capitalized subsequent to acquisition				13,735
Gross amount carried at close of period
Land and improvements				9,391
Buildings and improvements				51,959
Total	$ 61,350			61,350
Accumulated depreciation	$ (16,898)			(16,898)
Date of construction	1993
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 61,350
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 16,898
Unencumbered Apartment Communities | Park Highland | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Park Highland | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Park Hill at Issaquah
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	245
Initial cost
Land				7,284
Buildings and improvements				21,937
Costs capitalized subsequent to acquisition				11,471
Gross amount carried at close of period
Land and improvements				7,284
Buildings and improvements				33,408
Total	$ 40,692			40,692
Accumulated depreciation	$ (18,428)			(18,428)
Date of construction	1999
Date acquired	Feb-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 40,692
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,428
Unencumbered Apartment Communities | Park Hill at Issaquah | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Park Hill at Issaquah | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Park Viridian
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	320
Initial cost
Land				15,894
Buildings and improvements				63,574
Costs capitalized subsequent to acquisition				4,541
Gross amount carried at close of period
Land and improvements				15,894
Buildings and improvements				68,115
Total	$ 84,009			84,009
Accumulated depreciation	$ (17,410)			(17,410)
Date of construction	2008
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 84,009
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 17,410
Unencumbered Apartment Communities | Park Viridian | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Park Viridian | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Park West
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	126
Initial cost
Land				9,424
Buildings and improvements				21,988
Costs capitalized subsequent to acquisition				12,712
Gross amount carried at close of period
Land and improvements				9,424
Buildings and improvements				34,700
Total	$ 44,124			44,124
Accumulated depreciation	$ (14,022)			(14,022)
Date of construction	1958
Date acquired	Sep-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 44,124
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 14,022
Unencumbered Apartment Communities | Park West | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Park West | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Parkwood at Mill Creek
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	240
Initial cost
Land				10,680
Buildings and improvements				42,722
Costs capitalized subsequent to acquisition				3,545
Gross amount carried at close of period
Land and improvements				10,680
Buildings and improvements				46,267
Total	$ 56,947			56,947
Accumulated depreciation	$ (12,081)			(12,081)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 56,947
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,081
Unencumbered Apartment Communities | Parkwood at Mill Creek | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Parkwood at Mill Creek | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Patent 523
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	295
Initial cost
Land				14,558
Buildings and improvements				69,417
Costs capitalized subsequent to acquisition				6,137
Gross amount carried at close of period
Land and improvements				14,558
Buildings and improvements				75,554
Total	$ 90,112			90,112
Accumulated depreciation	$ (29,643)			(29,643)
Date of construction	2010
Date acquired	Mar-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 90,112
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 29,643
Unencumbered Apartment Communities | Patent 523 | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Patent 523 | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pathways at Bixby Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	296
Initial cost
Land				4,083
Buildings and improvements				16,757
Costs capitalized subsequent to acquisition				22,199
Gross amount carried at close of period
Land and improvements				6,239
Buildings and improvements				36,800
Total	$ 43,039			43,039
Accumulated depreciation	$ (33,133)			(33,133)
Date of construction	1975
Date acquired	Feb-91
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 43,039
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 33,133
Unencumbered Apartment Communities | Pathways at Bixby Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Pathways at Bixby Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Piedmont
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	396
Initial cost
Land				19,848
Buildings and improvements				59,606
Costs capitalized subsequent to acquisition				13,932
Gross amount carried at close of period
Land and improvements				19,848
Buildings and improvements				73,538
Total	$ 93,386			93,386
Accumulated depreciation	$ (20,426)			(20,426)
Date of construction	1969
Date acquired	May-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 93,386
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 20,426
Unencumbered Apartment Communities | Piedmont | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Piedmont | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pinehurst
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	28
Initial cost
Land				0
Buildings and improvements				1,711
Costs capitalized subsequent to acquisition				756
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				2,467
Total	$ 2,467			2,467
Accumulated depreciation	$ (1,643)			(1,643)
Date of construction	1973
Date acquired	Dec-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 2,467
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 1,643
Unencumbered Apartment Communities | Pinehurst | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Pinehurst | Maximum
Gross amount carried at close of period
Life used for depreciation	24 years
Unencumbered Apartment Communities | Pinnacle at Fullerton
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	192
Initial cost
Land				11,019
Buildings and improvements				45,932
Costs capitalized subsequent to acquisition				4,475
Gross amount carried at close of period
Land and improvements				11,019
Buildings and improvements				50,407
Total	$ 61,426			61,426
Accumulated depreciation	$ (13,250)			(13,250)
Date of construction	2004
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 61,426
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,250
Unencumbered Apartment Communities | Pinnacle at Fullerton | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Pinnacle at Fullerton | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pinnacle on Lake Washington
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	180
Initial cost
Land				7,760
Buildings and improvements				31,041
Costs capitalized subsequent to acquisition				3,915
Gross amount carried at close of period
Land and improvements				7,760
Buildings and improvements				34,956
Total	$ 42,716			42,716
Accumulated depreciation	$ (9,138)			(9,138)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 42,716
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,138
Unencumbered Apartment Communities | Pinnacle on Lake Washington | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Pinnacle on Lake Washington | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pinnacle at MacArthur Place
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	253
Initial cost
Land				15,810
Buildings and improvements				66,401
Costs capitalized subsequent to acquisition				6,056
Gross amount carried at close of period
Land and improvements				15,810
Buildings and improvements				72,457
Total	$ 88,267			88,267
Accumulated depreciation	$ (18,585)			(18,585)
Date of construction	2002
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 88,267
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,585
Unencumbered Apartment Communities | Pinnacle at MacArthur Place | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Pinnacle at MacArthur Place | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pinnacle at Otay Ranch I & II
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	364
Initial cost
Land				17,023
Buildings and improvements				68,093
Costs capitalized subsequent to acquisition				4,828
Gross amount carried at close of period
Land and improvements				17,023
Buildings and improvements				72,921
Total	$ 89,944			89,944
Accumulated depreciation	$ (18,684)			(18,684)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 89,944
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,684
Unencumbered Apartment Communities | Pinnacle at Otay Ranch I & II | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Pinnacle at Otay Ranch I & II | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pinnacle at Talega
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	362
Initial cost
Land				19,292
Buildings and improvements				77,168
Costs capitalized subsequent to acquisition				3,631
Gross amount carried at close of period
Land and improvements				19,292
Buildings and improvements				80,799
Total	$ 100,091			100,091
Accumulated depreciation	$ (20,288)			(20,288)
Date of construction	2002
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 100,091
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 20,288
Unencumbered Apartment Communities | Pinnacle at Talega | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Pinnacle at Talega | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pinnacle Sonata
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	268
Initial cost
Land				14,647
Buildings and improvements				58,586
Costs capitalized subsequent to acquisition				5,554
Gross amount carried at close of period
Land and improvements				14,647
Buildings and improvements				64,140
Total	$ 78,787			78,787
Accumulated depreciation	$ (16,211)			(16,211)
Date of construction	2000
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 78,787
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 16,211
Unencumbered Apartment Communities | Pinnacle Sonata | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Pinnacle Sonata | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pointe at Cupertino
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	116
Initial cost
Land				4,505
Buildings and improvements				17,605
Costs capitalized subsequent to acquisition				12,918
Gross amount carried at close of period
Land and improvements				4,505
Buildings and improvements				30,523
Total	$ 35,028			35,028
Accumulated depreciation	$ (20,740)			(20,740)
Date of construction	1963
Date acquired	Aug-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 35,028
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 20,740
Unencumbered Apartment Communities | Pointe at Cupertino | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Pointe at Cupertino | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Pure Redmond
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	105
Initial cost
Land				7,461
Buildings and improvements				31,363
Costs capitalized subsequent to acquisition				411
Gross amount carried at close of period
Land and improvements				7,461
Buildings and improvements				31,774
Total	$ 39,235			39,235
Accumulated depreciation	$ (1,195)			(1,195)
Date of construction	2016
Date acquired	Dec-19
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 39,235
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 1,195
Unencumbered Apartment Communities | Pure Redmond | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Pure Redmond | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Radius
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	264
Initial cost
Land				11,702
Buildings and improvements				152,336
Costs capitalized subsequent to acquisition				1,190
Gross amount carried at close of period
Land and improvements				11,702
Buildings and improvements				153,526
Total	$ 165,228			165,228
Accumulated depreciation	$ (39,220)			(39,220)
Date of construction	2015
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 165,228
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 39,220
Unencumbered Apartment Communities | Radius | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Radius | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Reed Square
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	100
Initial cost
Land				6,873
Buildings and improvements				16,037
Costs capitalized subsequent to acquisition				8,746
Gross amount carried at close of period
Land and improvements				6,873
Buildings and improvements				24,783
Total	$ 31,656			31,656
Accumulated depreciation	$ (11,387)			(11,387)
Date of construction	1970
Date acquired	Jan-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 31,656
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,387
Unencumbered Apartment Communities | Reed Square | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Reed Square | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Regency at Encino
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	75
Initial cost
Land				3,184
Buildings and improvements				12,737
Costs capitalized subsequent to acquisition				4,212
Gross amount carried at close of period
Land and improvements				3,184
Buildings and improvements				16,949
Total	$ 20,133			20,133
Accumulated depreciation	$ (7,710)			(7,710)
Date of construction	1989
Date acquired	Dec-09
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 20,133
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,710
Unencumbered Apartment Communities | Regency at Encino | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Regency at Encino | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Renaissance at Uptown Orange
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	460
Initial cost
Land				27,870
Buildings and improvements				111,482
Costs capitalized subsequent to acquisition				7,258
Gross amount carried at close of period
Land and improvements				27,870
Buildings and improvements				118,740
Total	$ 146,610			146,610
Accumulated depreciation	$ (29,992)			(29,992)
Date of construction	2007
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 146,610
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 29,992
Unencumbered Apartment Communities | Renaissance at Uptown Orange | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Renaissance at Uptown Orange | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Reveal
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	438
Initial cost
Land				25,073
Buildings and improvements				121,314
Costs capitalized subsequent to acquisition				3,656
Gross amount carried at close of period
Land and improvements				25,073
Buildings and improvements				124,970
Total	$ 150,043			150,043
Accumulated depreciation	$ (27,492)			(27,492)
Date of construction	2010
Date acquired	Apr-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 150,043
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 27,492
Unencumbered Apartment Communities | The Reveal | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Reveal | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Salmon Run at Perry Creek
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	132
Initial cost
Land				3,717
Buildings and improvements				11,483
Costs capitalized subsequent to acquisition				3,054
Gross amount carried at close of period
Land and improvements				3,801
Buildings and improvements				14,453
Total	$ 18,254			18,254
Accumulated depreciation	$ (9,519)			(9,519)
Date of construction	2000
Date acquired	Oct-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,254
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,519
Unencumbered Apartment Communities | Salmon Run at Perry Creek | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Salmon Run at Perry Creek | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Sammamish View
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	153
Initial cost
Land				3,324
Buildings and improvements				7,501
Costs capitalized subsequent to acquisition				7,530
Gross amount carried at close of period
Land and improvements				3,331
Buildings and improvements				15,024
Total	$ 18,355			18,355
Accumulated depreciation	$ (13,067)			(13,067)
Date of construction	1986
Date acquired	Nov-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,355
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,067
Unencumbered Apartment Communities | Sammamish View | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Sammamish View | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | 101 San Fernando
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	323
Initial cost
Land				4,173
Buildings and improvements				58,961
Costs capitalized subsequent to acquisition				13,856
Gross amount carried at close of period
Land and improvements				4,173
Buildings and improvements				72,817
Total	$ 76,990			76,990
Accumulated depreciation	$ (30,215)			(30,215)
Date of construction	2001
Date acquired	Jul-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 76,990
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 30,215
Unencumbered Apartment Communities | 101 San Fernando | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | 101 San Fernando | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | San Marcos
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	432
Initial cost
Land				15,563
Buildings and improvements				36,204
Costs capitalized subsequent to acquisition				33,980
Gross amount carried at close of period
Land and improvements				22,866
Buildings and improvements				62,881
Total	$ 85,747			85,747
Accumulated depreciation	$ (36,750)			(36,750)
Date of construction	2003
Date acquired	Nov-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 85,747
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 36,750
Unencumbered Apartment Communities | San Marcos | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | San Marcos | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Santee Court/Santee Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	238
Initial cost
Land				9,581
Buildings and improvements				40,317
Costs capitalized subsequent to acquisition				13,433
Gross amount carried at close of period
Land and improvements				9,582
Buildings and improvements				53,749
Total	$ 63,331			63,331
Accumulated depreciation	$ (19,802)			(19,802)
Date of construction	2004
Date acquired	Oct-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 63,331
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 19,802
Unencumbered Apartment Communities | Santee Court/Santee Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Santee Court/Santee Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Shadow Point
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	172
Initial cost
Land				2,812
Buildings and improvements				11,170
Costs capitalized subsequent to acquisition				4,576
Gross amount carried at close of period
Land and improvements				2,820
Buildings and improvements				15,738
Total	$ 18,558			18,558
Accumulated depreciation	$ (9,638)			(9,638)
Date of construction	1983
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,558
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,638
Unencumbered Apartment Communities | Shadow Point | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Shadow Point | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Shadowbrook
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	418
Initial cost
Land				19,292
Buildings and improvements				77,168
Costs capitalized subsequent to acquisition				6,131
Gross amount carried at close of period
Land and improvements				19,292
Buildings and improvements				83,299
Total	$ 102,591			102,591
Accumulated depreciation	$ (21,393)			(21,393)
Date of construction	1986
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 102,591
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 21,393
Unencumbered Apartment Communities | Shadowbrook | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Shadowbrook | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Slater 116
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	108
Initial cost
Land				7,379
Buildings and improvements				22,138
Costs capitalized subsequent to acquisition				1,323
Gross amount carried at close of period
Land and improvements				7,379
Buildings and improvements				23,461
Total	$ 30,840			30,840
Accumulated depreciation	$ (6,063)			(6,063)
Date of construction	2013
Date acquired	Sep-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,840
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 6,063
Unencumbered Apartment Communities | Slater 116 | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Slater 116 | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Solstice
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	280
Initial cost
Land				34,444
Buildings and improvements				147,262
Costs capitalized subsequent to acquisition				6,856
Gross amount carried at close of period
Land and improvements				34,444
Buildings and improvements				154,118
Total	$ 188,562			188,562
Accumulated depreciation	$ (42,130)			(42,130)
Date of construction	2014
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 188,562
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 42,130
Unencumbered Apartment Communities | Solstice | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Solstice | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Station Park Green - Phases I, II, and III
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	492
Initial cost
Land				54,782
Buildings and improvements				314,694
Costs capitalized subsequent to acquisition				282
Gross amount carried at close of period
Land and improvements				54,782
Buildings and improvements				314,976
Total	$ 369,758			369,758
Accumulated depreciation	$ (21,497)			(21,497)
Date of construction	2018
Date acquired	Mar-18
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 369,758
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 21,497
Unencumbered Apartment Communities | Station Park Green - Phases I, II, and III | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Station Park Green - Phases I, II, and III | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Stevenson Place
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	200
Initial cost
Land				996
Buildings and improvements				5,582
Costs capitalized subsequent to acquisition				14,268
Gross amount carried at close of period
Land and improvements				1,001
Buildings and improvements				19,845
Total	$ 20,846			20,846
Accumulated depreciation	$ (15,706)			(15,706)
Date of construction	1975
Date acquired	Apr-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 20,846
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,706
Unencumbered Apartment Communities | Stevenson Place | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Stevenson Place | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Stonehedge Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	196
Initial cost
Land				3,167
Buildings and improvements				12,603
Costs capitalized subsequent to acquisition				9,180
Gross amount carried at close of period
Land and improvements				3,201
Buildings and improvements				21,749
Total	$ 24,950			24,950
Accumulated depreciation	$ (15,989)			(15,989)
Date of construction	1986
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,950
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,989
Unencumbered Apartment Communities | Stonehedge Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Stonehedge Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Summerhill Park
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	100
Initial cost
Land				2,654
Buildings and improvements				4,918
Costs capitalized subsequent to acquisition				11,257
Gross amount carried at close of period
Land and improvements				2,656
Buildings and improvements				16,173
Total	$ 18,829			18,829
Accumulated depreciation	$ (12,935)			(12,935)
Date of construction	1988
Date acquired	Sep-88
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,829
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,935
Unencumbered Apartment Communities | Summerhill Park | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Summerhill Park | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Summit Park
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	300
Initial cost
Land				5,959
Buildings and improvements				23,670
Costs capitalized subsequent to acquisition				8,912
Gross amount carried at close of period
Land and improvements				5,977
Buildings and improvements				32,564
Total	$ 38,541			38,541
Accumulated depreciation	$ (19,893)			(19,893)
Date of construction	1972
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 38,541
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 19,893
Unencumbered Apartment Communities | Summit Park | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Summit Park | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Taylor 28
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	197
Initial cost
Land				13,915
Buildings and improvements				57,700
Costs capitalized subsequent to acquisition				3,693
Gross amount carried at close of period
Land and improvements				13,915
Buildings and improvements				61,393
Total	$ 75,308			75,308
Accumulated depreciation	$ (15,413)			(15,413)
Date of construction	2008
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 75,308
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,413
Unencumbered Apartment Communities | Taylor 28 | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Taylor 28 | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Audrey at Belltown
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	137
Initial cost
Land				9,228
Buildings and improvements				36,911
Costs capitalized subsequent to acquisition				2,050
Gross amount carried at close of period
Land and improvements				9,228
Buildings and improvements				38,961
Total	$ 48,189			48,189
Accumulated depreciation	$ (9,456)			(9,456)
Date of construction	1992
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 48,189
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,456
Unencumbered Apartment Communities | The Audrey at Belltown | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | The Audrey at Belltown | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Avery
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	121
Initial cost
Land				6,964
Buildings and improvements				29,922
Costs capitalized subsequent to acquisition				889
Gross amount carried at close of period
Land and improvements				6,964
Buildings and improvements				30,811
Total	$ 37,775			37,775
Accumulated depreciation	$ (7,071)			(7,071)
Date of construction	2014
Date acquired	Mar-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 37,775
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,071
Unencumbered Apartment Communities | The Avery | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Avery | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Bernard
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	63
Initial cost
Land				3,699
Buildings and improvements				11,345
Costs capitalized subsequent to acquisition				884
Gross amount carried at close of period
Land and improvements				3,689
Buildings and improvements				12,239
Total	$ 15,928			15,928
Accumulated depreciation	$ (4,075)			(4,075)
Date of construction	2008
Date acquired	Sep-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 15,928
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 4,075
Unencumbered Apartment Communities | The Bernard | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Bernard | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Blake LA
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	196
Initial cost
Land				4,023
Buildings and improvements				9,527
Costs capitalized subsequent to acquisition				24,135
Gross amount carried at close of period
Land and improvements				4,031
Buildings and improvements				33,654
Total	$ 37,685			37,685
Accumulated depreciation	$ (20,615)			(20,615)
Date of construction	1979
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 37,685
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 20,615
Unencumbered Apartment Communities | The Blake LA | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Blake LA | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Cairns
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	99
Initial cost
Land				6,937
Buildings and improvements				20,679
Costs capitalized subsequent to acquisition				2,586
Gross amount carried at close of period
Land and improvements				6,939
Buildings and improvements				23,263
Total	$ 30,202			30,202
Accumulated depreciation	$ (10,874)			(10,874)
Date of construction	2006
Date acquired	Jun-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,202
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 10,874
Unencumbered Apartment Communities | The Cairns | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Cairns | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Commons
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	264
Initial cost
Land				12,555
Buildings and improvements				29,307
Costs capitalized subsequent to acquisition				9,940
Gross amount carried at close of period
Land and improvements				12,556
Buildings and improvements				39,246
Total	$ 51,802			51,802
Accumulated depreciation	$ (16,958)			(16,958)
Date of construction	1973
Date acquired	Jul-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,802
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 16,958
Unencumbered Apartment Communities | The Commons | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Commons | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Elliot at Mukilteo
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	301
Initial cost
Land				2,498
Buildings and improvements				10,595
Costs capitalized subsequent to acquisition				18,928
Gross amount carried at close of period
Land and improvements				2,824
Buildings and improvements				29,197
Total	$ 32,021			32,021
Accumulated depreciation	$ (22,866)			(22,866)
Date of construction	1981
Date acquired	Jan-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,021
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 22,866
Unencumbered Apartment Communities | The Elliot at Mukilteo | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Elliot at Mukilteo | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Galloway
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	506
Initial cost
Land				32,966
Buildings and improvements				184,499
Costs capitalized subsequent to acquisition				488
Gross amount carried at close of period
Land and improvements				32,966
Buildings and improvements				184,987
Total	$ 217,953			217,953
Accumulated depreciation	$ (6,214)			(6,214)
Date of construction	2016
Date acquired	Jan-20
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 217,953
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 6,214
Unencumbered Apartment Communities | The Galloway | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Galloway | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Grand
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	243
Initial cost
Land				4,531
Buildings and improvements				89,208
Costs capitalized subsequent to acquisition				7,518
Gross amount carried at close of period
Land and improvements				4,531
Buildings and improvements				96,726
Total	$ 101,257			101,257
Accumulated depreciation	$ (40,981)			(40,981)
Date of construction	2009
Date acquired	Jan-09
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 101,257
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 40,981
Unencumbered Apartment Communities | The Grand | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Grand | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Hallie
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	292
Initial cost
Land				2,202
Buildings and improvements				4,794
Costs capitalized subsequent to acquisition				55,653
Gross amount carried at close of period
Land and improvements				8,385
Buildings and improvements				54,264
Total	$ 62,649			62,649
Accumulated depreciation	$ (39,551)			(39,551)
Date of construction	1972
Date acquired	Apr-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 62,649
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 39,551
Unencumbered Apartment Communities | The Hallie | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Hallie | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Huntington
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	276
Initial cost
Land				10,374
Buildings and improvements				41,495
Costs capitalized subsequent to acquisition				7,036
Gross amount carried at close of period
Land and improvements				10,374
Buildings and improvements				48,531
Total	$ 58,905			58,905
Accumulated depreciation	$ (15,784)			(15,784)
Date of construction	1975
Date acquired	Jun-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 58,905
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,784
Unencumbered Apartment Communities | The Huntington | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Huntington | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Landing at Jack London Square
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	282
Initial cost
Land				33,554
Buildings and improvements				78,292
Costs capitalized subsequent to acquisition				7,860
Gross amount carried at close of period
Land and improvements				33,554
Buildings and improvements				86,152
Total	$ 119,706			119,706
Accumulated depreciation	$ (23,251)			(23,251)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 119,706
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 23,251
Unencumbered Apartment Communities | The Landing at Jack London Square | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | The Landing at Jack London Square | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Lofts at Pinehurst
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	118
Initial cost
Land				1,570
Buildings and improvements				3,912
Costs capitalized subsequent to acquisition				5,699
Gross amount carried at close of period
Land and improvements				1,618
Buildings and improvements				9,563
Total	$ 11,181			11,181
Accumulated depreciation	$ (6,616)			(6,616)
Date of construction	1971
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 11,181
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 6,616
Unencumbered Apartment Communities | The Lofts at Pinehurst | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Lofts at Pinehurst | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Palisades
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	192
Initial cost
Land				1,560
Buildings and improvements				6,242
Costs capitalized subsequent to acquisition				13,990
Gross amount carried at close of period
Land and improvements				1,565
Buildings and improvements				20,227
Total	$ 21,792			21,792
Accumulated depreciation	$ (18,275)			(18,275)
Date of construction	1977
Date acquired	May-90
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 21,792
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 18,275
Unencumbered Apartment Communities | The Palisades | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Palisades | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Palms at Laguna Niguel
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	460
Initial cost
Land				23,584
Buildings and improvements				94,334
Costs capitalized subsequent to acquisition				12,080
Gross amount carried at close of period
Land and improvements				23,584
Buildings and improvements				106,414
Total	$ 129,998			129,998
Accumulated depreciation	$ (27,812)			(27,812)
Date of construction	1988
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 129,998
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 27,812
Unencumbered Apartment Communities | The Palms at Laguna Niguel | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | The Palms at Laguna Niguel | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Stuart
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	188
Initial cost
Land				13,574
Buildings and improvements				54,298
Costs capitalized subsequent to acquisition				3,098
Gross amount carried at close of period
Land and improvements				13,574
Buildings and improvements				57,396
Total	$ 70,970			70,970
Accumulated depreciation	$ (14,822)			(14,822)
Date of construction	2007
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 70,970
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 14,822
Unencumbered Apartment Communities | The Stuart | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | The Stuart | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Trails of Redmond
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	423
Initial cost
Land				21,930
Buildings and improvements				87,720
Costs capitalized subsequent to acquisition				6,031
Gross amount carried at close of period
Land and improvements				21,930
Buildings and improvements				93,751
Total	$ 115,681			115,681
Accumulated depreciation	$ (23,961)			(23,961)
Date of construction	1985
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 115,681
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 23,961
Unencumbered Apartment Communities | The Trails of Redmond | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | The Trails of Redmond | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | The Waterford
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	238
Initial cost
Land				11,808
Buildings and improvements				24,500
Costs capitalized subsequent to acquisition				17,968
Gross amount carried at close of period
Land and improvements				15,165
Buildings and improvements				39,111
Total	$ 54,276			54,276
Accumulated depreciation	$ (25,616)			(25,616)
Date of construction	2000
Date acquired	Jun-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 54,276
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 25,616
Unencumbered Apartment Communities | The Waterford | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | The Waterford | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Tierra Vista
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	404
Initial cost
Land				13,652
Buildings and improvements				53,336
Costs capitalized subsequent to acquisition				7,831
Gross amount carried at close of period
Land and improvements				13,661
Buildings and improvements				61,158
Total	$ 74,819			74,819
Accumulated depreciation	$ (34,469)			(34,469)
Date of construction	2001
Date acquired	Jan-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 74,819
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 34,469
Unencumbered Apartment Communities | Tierra Vista | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Tierra Vista | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Tiffany Court
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	101
Initial cost
Land				6,949
Buildings and improvements				27,796
Costs capitalized subsequent to acquisition				2,042
Gross amount carried at close of period
Land and improvements				6,949
Buildings and improvements				29,838
Total	$ 36,787			36,787
Accumulated depreciation	$ (7,574)			(7,574)
Date of construction	1987
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 36,787
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 7,574
Unencumbered Apartment Communities | Tiffany Court | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Tiffany Court | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Trabucco Villas
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	132
Initial cost
Land				3,638
Buildings and improvements				8,640
Costs capitalized subsequent to acquisition				4,292
Gross amount carried at close of period
Land and improvements				3,890
Buildings and improvements				12,680
Total	$ 16,570			16,570
Accumulated depreciation	$ (9,358)			(9,358)
Date of construction	1985
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 16,570
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 9,358
Unencumbered Apartment Communities | Trabucco Villas | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Trabucco Villas | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Valley Park
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	160
Initial cost
Land				3,361
Buildings and improvements				13,420
Costs capitalized subsequent to acquisition				6,653
Gross amount carried at close of period
Land and improvements				3,761
Buildings and improvements				19,673
Total	$ 23,434			23,434
Accumulated depreciation	$ (12,488)			(12,488)
Date of construction	1969
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 23,434
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,488
Unencumbered Apartment Communities | Via
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	284
Initial cost
Land				22,000
Buildings and improvements				82,270
Costs capitalized subsequent to acquisition				3,630
Gross amount carried at close of period
Land and improvements				22,016
Buildings and improvements				85,884
Total	$ 107,900			107,900
Accumulated depreciation	$ (30,810)			(30,810)
Date of construction	2011
Date acquired	Jul-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 107,900
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 30,810
Unencumbered Apartment Communities | Via | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Via | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Villa Angelina
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	256
Initial cost
Land				4,498
Buildings and improvements				17,962
Costs capitalized subsequent to acquisition				8,173
Gross amount carried at close of period
Land and improvements				4,962
Buildings and improvements				25,671
Total	$ 30,633			30,633
Accumulated depreciation	$ (16,856)			(16,856)
Date of construction	1970
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,633
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 16,856
Unencumbered Apartment Communities | Villa Granada
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	270
Initial cost
Land				38,299
Buildings and improvements				89,365
Costs capitalized subsequent to acquisition				1,974
Gross amount carried at close of period
Land and improvements				38,299
Buildings and improvements				91,339
Total	$ 129,638			129,638
Accumulated depreciation	$ (22,819)			(22,819)
Date of construction	2010
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 129,638
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 22,819
Unencumbered Apartment Communities | Villa Granada | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Villa Granada | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Villa Siena
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	272
Initial cost
Land				13,842
Buildings and improvements				55,367
Costs capitalized subsequent to acquisition				9,356
Gross amount carried at close of period
Land and improvements				13,842
Buildings and improvements				64,723
Total	$ 78,565			78,565
Accumulated depreciation	$ (17,830)			(17,830)
Date of construction	1974
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 78,565
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 17,830
Unencumbered Apartment Communities | Villa Siena | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Villa Siena | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Village Green
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	272
Initial cost
Land				6,488
Buildings and improvements				36,768
Costs capitalized subsequent to acquisition				4,309
Gross amount carried at close of period
Land and improvements				6,488
Buildings and improvements				41,077
Total	$ 47,565			47,565
Accumulated depreciation	$ (11,151)			(11,151)
Date of construction	1971
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 47,565
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 11,151
Unencumbered Apartment Communities | Village Green | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Village Green | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Vista Belvedere
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	76
Initial cost
Land				5,573
Buildings and improvements				11,901
Costs capitalized subsequent to acquisition				9,031
Gross amount carried at close of period
Land and improvements				5,573
Buildings and improvements				20,932
Total	$ 26,505			26,505
Accumulated depreciation	$ (13,068)			(13,068)
Date of construction	1963
Date acquired	Aug-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,505
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 13,068
Unencumbered Apartment Communities | Vista Belvedere | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Vista Belvedere | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Vox Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	58
Initial cost
Land				5,545
Buildings and improvements				16,635
Costs capitalized subsequent to acquisition				435
Gross amount carried at close of period
Land and improvements				5,545
Buildings and improvements				17,070
Total	$ 22,615			22,615
Accumulated depreciation	$ (4,158)			(4,158)
Date of construction	2013
Date acquired	Oct-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 22,615
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 4,158
Unencumbered Apartment Communities | Vox Apartments | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Vox Apartments | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Walnut Heights
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	163
Initial cost
Land				4,858
Buildings and improvements				19,168
Costs capitalized subsequent to acquisition				5,868
Gross amount carried at close of period
Land and improvements				4,887
Buildings and improvements				25,007
Total	$ 29,894			29,894
Accumulated depreciation	$ (14,831)			(14,831)
Date of construction	1964
Date acquired	Oct-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 29,894
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 14,831
Unencumbered Apartment Communities | Walnut Heights | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Walnut Heights | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Wandering Creek
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	156
Initial cost
Land				1,285
Buildings and improvements				4,980
Costs capitalized subsequent to acquisition				5,345
Gross amount carried at close of period
Land and improvements				1,296
Buildings and improvements				10,314
Total	$ 11,610			11,610
Accumulated depreciation	$ (8,403)			(8,403)
Date of construction	1986
Date acquired	Nov-95
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 11,610
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 8,403
Unencumbered Apartment Communities | Wandering Creek | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Wandering Creek | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Wharfside Pointe
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	155
Initial cost
Land				2,245
Buildings and improvements				7,020
Costs capitalized subsequent to acquisition				13,442
Gross amount carried at close of period
Land and improvements				2,258
Buildings and improvements				20,449
Total	$ 22,707			22,707
Accumulated depreciation	$ (15,891)			(15,891)
Date of construction	1990
Date acquired	Jun-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 22,707
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 15,891
Unencumbered Apartment Communities | Wharfside Pointe | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Wharfside Pointe | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Willow Lake
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	508
Initial cost
Land				43,194
Buildings and improvements				101,030
Costs capitalized subsequent to acquisition				17,140
Gross amount carried at close of period
Land and improvements				43,194
Buildings and improvements				118,170
Total	$ 161,364			161,364
Accumulated depreciation	$ (37,680)			(37,680)
Date of construction	1989
Date acquired	Oct-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 161,364
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 37,680
Unencumbered Apartment Communities | Willow Lake | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Willow Lake | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | 5600 Wilshire
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	284
Initial cost
Land				30,535
Buildings and improvements				91,604
Costs capitalized subsequent to acquisition				5,049
Gross amount carried at close of period
Land and improvements				30,535
Buildings and improvements				96,653
Total	$ 127,188			127,188
Accumulated depreciation	$ (23,763)			(23,763)
Date of construction	2008
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 127,188
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 23,763
Unencumbered Apartment Communities | 5600 Wilshire | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | 5600 Wilshire | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Wilshire La Brea
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	478
Initial cost
Land				56,932
Buildings and improvements				211,998
Costs capitalized subsequent to acquisition				11,972
Gross amount carried at close of period
Land and improvements				56,932
Buildings and improvements				223,970
Total	$ 280,902			280,902
Accumulated depreciation	$ (60,187)			(60,187)
Date of construction	2014
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 280,902
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 60,187
Unencumbered Apartment Communities | Wilshire La Brea | Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities | Wilshire La Brea | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Wilshire Promenade
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	149
Initial cost
Land				3,118
Buildings and improvements				7,385
Costs capitalized subsequent to acquisition				12,572
Gross amount carried at close of period
Land and improvements				3,797
Buildings and improvements				19,278
Total	$ 23,075			23,075
Accumulated depreciation	$ (12,881)			(12,881)
Date of construction	1992
Date acquired	Jan-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 23,075
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 12,881
Unencumbered Apartment Communities | Wilshire Promenade | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Wilshire Promenade | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Windsor Ridge
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	216
Initial cost
Land				4,017
Buildings and improvements				10,315
Costs capitalized subsequent to acquisition				17,003
Gross amount carried at close of period
Land and improvements				4,021
Buildings and improvements				27,314
Total	$ 31,335			31,335
Accumulated depreciation	$ (23,963)			(23,963)
Date of construction	1989
Date acquired	Mar-89
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 31,335
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 23,963
Unencumbered Apartment Communities | Windsor Ridge | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Windsor Ridge | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Woodland Commons
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	302
Initial cost
Land				2,040
Buildings and improvements				8,727
Costs capitalized subsequent to acquisition				24,952
Gross amount carried at close of period
Land and improvements				2,044
Buildings and improvements				33,675
Total	$ 35,719			35,719
Accumulated depreciation	$ (24,474)			(24,474)
Date of construction	1978
Date acquired	Mar-90
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 35,719
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 24,474
Unencumbered Apartment Communities | Woodland Commons | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Woodland Commons | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities | Woodside Village
Real Estate and Accumulated Depreciation [Line Items]
Units | apartment	145
Initial cost
Land				5,331
Buildings and improvements				21,036
Costs capitalized subsequent to acquisition				5,855
Gross amount carried at close of period
Land and improvements				5,341
Buildings and improvements				26,881
Total	$ 32,222			32,222
Accumulated depreciation	$ (14,838)			(14,838)
Date of construction	1987
Date acquired	Dec-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,222
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ 14,838
Unencumbered Apartment Communities | Woodside Village | Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities | Woodside Village | Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Other Property
Initial cost
Land				3,079
Buildings and improvements				12,315
Costs capitalized subsequent to acquisition				14,279
Gross amount carried at close of period
Land and improvements				3,909
Buildings and improvements				25,764
Total	$ 29,673			29,673
Accumulated depreciation	(18,859)			(18,859)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	29,673
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	18,859
Other Property | Other real estate assets
Initial cost
Land				3,079
Buildings and improvements				12,315
Costs capitalized subsequent to acquisition				14,279
Gross amount carried at close of period
Land and improvements				3,909
Buildings and improvements				25,764
Total	29,673			29,673
Accumulated depreciation	(18,859)			(18,859)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	29,673
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	18,859
Real Estate Rental Property
Gross amount carried at close of period
Total	14,038,142	13,366,101	13,366,101	$ 15,061,745
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at beginning of year	14,038,142	13,366,101	13,362,073
Balance at the end of year	$ 15,061,745	$ 14,038,142	$ 13,366,101