Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Summary Of Significant Accounting Policies [Abstract]

Net Income Allocation

	2015		2014		2013
Net income allocable to noncontrolling interests:
Noncontrolling interests — common units	$	18,495	$	30,729	$	12,952
Total net income allocable to noncontrolling interests		18,495		30,729		12,952
Net income allocable to PS Business Parks, Inc.:
Preferred shareholders:
Distributions to preferred shareholders		59,398		60,488		59,216
Non-cash distributions related to the redemption of
preferred stock		2,487		—		—
Total net income allocable to preferred shareholders		61,885		60,488		59,216
Restricted stock unit holders		299		329		125
Common shareholders		68,291		113,154		43,851
Total net income allocable to PS Business Parks, Inc.		130,475		173,971		103,192
Net income	$	148,970	$	204,700	$	116,144

Calculation Of Earnings Per Share

	2015		2014		2013
Net income allocable to common shareholders	$	68,291	$	113,154	$	43,851
Weighted average common shares outstanding:
Basic weighted average common shares outstanding		26,973		26,899		24,732
Net effect of dilutive stock compensation — based on
treasury stock method using average market price		78		101		101
Diluted weighted average common shares outstanding		27,051		27,000		24,833
Net income per common share — Basic	$	2.53	$	4.21	$	1.77
Net income per common share — Diluted	$	2.52	$	4.19	$	1.77