Consolidated Statements of Equity - USD ($) $ in Thousands		Total		Previously Reported	Revision of Prior Period, Adjustment	Total PS Business Parks, Inc.'s Stockholders' Equity		Total PS Business Parks, Inc.'s Stockholders' Equity Previously Reported	Total PS Business Parks, Inc.'s Stockholders' Equity Revision of Prior Period, Adjustment	Preferred Stock		Preferred Stock Previously Reported	Preferred Stock Revision of Prior Period, Adjustment	Common Stock		Common Stock Previously Reported	Common Stock Revision of Prior Period, Adjustment	Paid-in Capital		Paid-in Capital Previously Reported	Paid-in Capital Revision of Prior Period, Adjustment	Accumulated Earnings (Deficit)		Accumulated Earnings (Deficit) Previously Reported	Accumulated Earnings (Deficit) Revision of Prior Period, Adjustment	Noncontrolling Interest		Noncontrolling Interest Previously Reported	Noncontrolling Interest Revision of Prior Period, Adjustment
Beginning balance (in shares) at Dec. 31, 2020										37,790
Beginning balance (in shares) at Dec. 31, 2020														27,488,547
Beginning balance at Dec. 31, 2020		$ 1,975,640				$ 1,756,677				$ 944,750				$ 274				$ 738,022				$ 73,631				$ 218,963
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interests		(23,072)																								(23,072)
Issuance of common stock in connection with share-based compensation (in shares)														57,606
Issuance of common stock in connection with share-based compensation		907				907								$ 1				906
Issuance cost		(105)				(105)												(105)
Stock compensation, net		5,889				5,889												5,889
Cash paid for taxes in lieu of stock upon vesting of restricted stock units		(3,680)				(3,680)												(3,680)
Noncontrolling interests - joint venture		523																								523
Distributions
Preferred stock		(36,139)				(36,139)																(36,139)
Common stock		(86,713)				(86,713)																(86,713)
Net income (loss)		196,020				162,665																162,665				33,355
Ending balance (in shares) at Sep. 30, 2021										37,790
Ending balance (in shares) at Sep. 30, 2021														27,546,153
Ending balance at Sep. 30, 2021		2,029,270				1,799,501				$ 944,750				$ 275				741,032				113,444				229,769
Beginning balance (in shares) at Jun. 30, 2021										37,790
Beginning balance (in shares) at Jun. 30, 2021														27,541,464
Beginning balance at Jun. 30, 2021		1,997,535				1,774,161				$ 944,750				$ 275				739,336				89,800				223,374
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interests		(7,691)																								(7,691)
Issuance of common stock in connection with share-based compensation (in shares)														4,689
Stock compensation, net		2,174				2,174												2,174
Cash paid for taxes in lieu of stock upon vesting of restricted stock units		(478)				(478)												(478)
Noncontrolling interests - joint venture		236																								236
Distributions
Preferred stock		(12,046)				(12,046)																(12,046)
Common stock		(28,923)				(28,923)																(28,923)
Net income (loss)		78,463				64,613																64,613				13,850
Ending balance (in shares) at Sep. 30, 2021										37,790
Ending balance (in shares) at Sep. 30, 2021														27,546,153
Ending balance at Sep. 30, 2021		$ 2,029,270				1,799,501				$ 944,750				$ 275				741,032				113,444				229,769
Beginning balance (in shares) at Dec. 31, 2021		30,200								30,200
Beginning balance (in shares) at Dec. 31, 2021		27,589,807												27,589,807
Beginning balance at Dec. 31, 2021		$ 1,994,071				1,734,456				$ 755,000				$ 275				752,444				226,737				259,615
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interests		(55,358)																								(55,358)
Issuance of common stock in connection with share-based compensation (in shares)														41,692
Issuance of common stock in connection with share-based compensation		2,102				2,102								$ 1				2,101
Issuance cost		176				176												176
Stock compensation, net		3,028				3,028												3,028
Cash paid for taxes in lieu of stock upon vesting of restricted stock units		(1,318)				(1,318)												(1,318)
Noncontrolling interests - joint venture		492																								492
Distributions
Preferred stock		(19,160)				(19,160)																(19,160)
Common stock		(209,079)				(209,079)																(209,079)
Net income (loss)		159,190				129,966																129,966				29,224
Ending balance (in shares) at Jul. 19, 2022	[1]									30,200
Ending balance (in shares) at Jul. 19, 2022	[1]													27,631,499
Ending balance at Jul. 19, 2022		$ 1,874,144	[1]			1,640,171	[1]			$ 755,000	[2]			$ 276	[2]			756,431	[1]			128,464	[1]			233,973	[1]
Beginning balance (in shares) at Dec. 31, 2021		30,200								30,200
Beginning balance (in shares) at Dec. 31, 2021		27,589,807												27,589,807
Beginning balance at Dec. 31, 2021		$ 1,994,071				1,734,456				$ 755,000				$ 275				752,444				226,737				259,615
Ending balance (in shares) at Sep. 30, 2022		30,325								30,325
Ending balance (in shares) at Sep. 30, 2022		100												100
Ending balance at Sep. 30, 2022		$ 2,059,052				2,045,585				$ 563,526				$ 0				2,847,170				(1,365,111)				13,467
Beginning balance (in shares) at Jun. 30, 2022										30,200
Beginning balance (in shares) at Jun. 30, 2022														27,631,499
Beginning balance at Jun. 30, 2022		2,114,010				1,829,931				$ 755,000				$ 276				755,873				318,782				284,079
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interests		(39,972)																								(39,972)
Issuance cost		176				176												176
Stock compensation, net		382				382												382
Noncontrolling interests - joint venture		79																								79
Distributions
Common stock		(151,056)				(151,056)																(151,056)
Net income (loss)		(49,475)				(39,262)																(39,262)				(10,213)
Ending balance (in shares) at Jul. 19, 2022	[1]									30,200
Ending balance (in shares) at Jul. 19, 2022	[1]													27,631,499
Ending balance at Jul. 19, 2022		1,874,144	[1]			1,640,171	[1]			$ 755,000	[2]			$ 276	[2]			756,431	[1]			128,464	[1]			233,973	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Blackstone purchase and contribution					$ 2,847,170				$ 2,847,170												$ 2,847,170
Redemption of common shares (in shares)																	(27,631,499)
Redemption of common shares					(5,035,841)				(5,035,841)								$ (276)				(756,431)				$ (4,279,134)
Application of purchase accounting (in shares)													30,200				27,631,499
Application of purchase accounting					6,907,571				5,598,867				$ 563,026				$ 276				$ 756,431				4,279,134				$ 1,308,704
Distribution of assets					(1,295,217)																								$ (1,295,217)
Parent Partners Loans receivable					$ (1,285,575)				$ (1,285,575)																$ (1,285,575)
Ending balance (in shares) at Jul. 20, 2022										30,200		0
Ending balance (in shares) at Jul. 20, 2022														0		0
Ending balance at Jul. 20, 2022		2,138,108		$ 0		2,124,621		$ 0		$ 563,026		$ 0		$ 0		$ 0		2,847,170		$ 0		(1,285,575)		$ 0		13,487		$ 0
Beginning balance (in shares) at Jul. 19, 2022	[1]									30,200
Beginning balance (in shares) at Jul. 19, 2022	[1]													27,631,499
Beginning balance at Jul. 19, 2022		1,874,144	[1]			1,640,171	[1]			$ 755,000	[2]			$ 276	[2]			756,431	[1]			128,464	[1]			233,973	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of preferred stock, net of costs (in shares)										125				100
Issuance of stock, net of costs		500				500				$ 500
Noncontrolling interests - joint venture		137																								137
Distributions
Preferred stock		(9,580)				(9,580)																(9,580)
Net income (loss)		$ (70,113)				(69,956)																(69,956)				(157)
Ending balance (in shares) at Sep. 30, 2022		30,325								30,325
Ending balance (in shares) at Sep. 30, 2022		100												100
Ending balance at Sep. 30, 2022		$ 2,059,052				$ 2,045,585				$ 563,526				$ 0				$ 2,847,170				$ (1,365,111)				$ 13,467

[1] This balance was reset as part of purchase accounting. Refer to Note 2 — Summary of Significant Accounting Policies for additional details.

[2] This balance was reset as part of purchase accounting. Refer to Note 2 — Summary of Significant Accounting Policies for additional details.