Organization and Summary of Significant Accounting Policies - Reverse Share Split (Details) $ in Millions				12 Months Ended
	Dec. 15, 2022 USD ($)	Jun. 16, 2022	Feb. 04, 2022	Dec. 31, 2022	Dec. 31, 2020
Real Estate Properties [Line Items]
Common stock, conversion ratio		15
Stockholders' Equity, Reverse Stock Split				On June 16, 2022, the Company effected a one-for-fifteen reverse share split of its common shares. Upon the effectiveness of the reverse share split, every 15 issued and outstanding common shares were combined into one issued and outstanding common share, with no change in par value per share, and the authorized number of common shares was proportionally reduced. Shareholders entitled to fractional shares as a result of the reverse share split were entitled to receive a cash payment in lieu of receiving fractional shares. All common share and per share data in the consolidated financial statements and notes to the consolidated financial statements have been retrospectively revised to reflect the reverse share split. Common shares underlying outstanding options, time based restricted share units, performance based share units and restricted shares were proportionately reduced and the respective exercise prices, if applicable, were proportionately increased. Additionally, the conversion rate of OP Units into common shares was automatically proportionally adjusted from one-for-one to fifteen-for-one. The reverse share split resulted in bringing the Company into compliance with the minimum bid price requirement for maintaining its listing on the New York Stock Exchange (the “NYSE”), and on July 1, 2022, the Company received notice from the NYSE that it had regained compliance with the minimum bid price requirement. The Company's common shares continued to trade under the symbol “PEI” and began trading on a split-adjusted basis on June 16, 2022
Trading period	30 days		30 days		30 days
Average market global capitalization amount	$ 15