Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Rental income	$ 92,948	$ 93,986	$ 185,263	$ 189,307
Facility management fees	133	165	280	331
Total operating revenues	93,081	94,151	185,543	189,638
Expenses:
Cost of operations	30,057	31,535	61,803	64,979
Depreciation and amortization	27,025	28,295	53,258	56,736
General and administrative	3,497	3,363	6,896	5,850
Total operating expenses	60,579	63,193	121,957	127,565
Other income and (expense):
Interest and other income	145	95	252	157
Interest and other expense	(3,338)	(3,403)	(6,661)	(6,779)
Total other income and (expense)	(3,193)	(3,308)	(6,409)	(6,622)
Gain on sale of real estate facilities			12,487
Net income	29,309	27,650	69,664	55,451
Net income allocable to noncontrolling interests:
Noncontrolling interests - common units	3,016	2,669	8,379	5,372
Total net income allocable to noncontrolling interests	3,016	2,669	8,379	5,372
Net income allocable to PS Business Parks, Inc.:
Preferred shareholders	15,122	15,122	30,244	30,244
Restricted stock unit holders	42	33	140	69
Common shareholders	11,129	9,826	30,901	19,766
Total net income allocable to PS Business Parks, Inc.	26,293	24,981	61,285	50,079
Net income	$ 29,309	$ 27,650	$ 69,664	$ 55,451
Net income per common share:
Basic	$ 0.41	$ 0.37	$ 1.15	$ 0.74
Diluted	$ 0.41	$ 0.36	$ 1.14	$ 0.73
Weighted average common shares outstanding:
Basic	26,956	26,899	26,941	26,881
Diluted	27,033	26,999	27,027	26,981
Dividends declared per common share	$ 0.50	$ 0.50	$ 1.00	$ 1.00