ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Immaterial Error Correction (Details)	30 Months Ended
Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Immaterial Error Correction	The Consolidated Statements of Operations and the Consolidated Statements of Comprehensive Income for the years ended December 31, 2017 and 2016 include the impact of correcting the reporting of net loss (income) attributable to noncontrolling interest and common shareholders. Specifically, the correction adjusts for a computational error by reducing net income (and comprehensive income) or by increasing the net loss (and comprehensive loss) attributable to noncontrolling interest by $3.4 million and $1.7 million for the years ended December 31, 2017 and 2016, respectively. The 2018 and 2017 quarterly results were also adjusted by increasing the net loss (and comprehensive loss) attributable to noncontrolling interest in the amount of $0.7 million for each of the three months ended March 31, 2018 and 2017; $0.7 million and $0.8 million for the three months ended June 30, 2018 and 2017, respectively; $0.8 million for the three months ended September 30, 2017, and $1.2 million for the three months ended December 31, 2017. The adjustments also increased the amount of net income (and comprehensive income) or decreased the amount of loss (and comprehensive loss) attributable to PREIT and PREIT common shareholders by the corresponding amounts. The adjustments also increased the amount of basic and diluted earnings per share or decreased the amount of basic and diluted loss per share by $0.05 for the year ended December 31, 2017 and $0.02 for the year ended December 31, 2016. The 2018 and 2017 quarterly results were also adjusted by increasing the amount of basic and diluted earnings per share or decreased the amount of basic and diluted loss per share by $0.01 for each of the three months ended March 31, 2018 and 2017; June 30, 2018 and 2017; September 30, 2017, and $0.02 for the three months ended December 31, 2017.

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Immaterial Error Correction (Details)

30 Months Ended

Jun. 30, 2018

Accounting Changes and Error Corrections [Abstract]

The Consolidated Statements of Operations and the Consolidated Statements of Comprehensive Income for the years ended December 31, 2017 and 2016 include the impact of correcting the reporting of net loss (income) attributable to noncontrolling interest and common shareholders. Specifically, the correction adjusts for a computational error by reducing net income (and comprehensive income) or by increasing the net loss (and comprehensive loss) attributable to noncontrolling interest by $3.4 million and $1.7 million for the years ended December 31, 2017 and 2016, respectively. The 2018 and 2017 quarterly results were also adjusted by increasing the net loss (and comprehensive loss) attributable to noncontrolling interest in the amount of $0.7 million for each of the three months ended March 31, 2018 and 2017; $0.7 million and $0.8 million for the three months ended June 30, 2018 and 2017, respectively; $0.8 million for the three months ended September 30, 2017, and $1.2 million for the three months ended December 31, 2017. The adjustments also increased the amount of net income (and comprehensive income) or decreased the amount of loss (and comprehensive loss) attributable to PREIT and PREIT common shareholders by the corresponding amounts. The adjustments also increased the amount of basic and diluted earnings per share or decreased the amount of basic and diluted loss per share by $0.05 for the year ended December 31, 2017 and $0.02 for the year ended December 31, 2016. The 2018 and 2017 quarterly results were also adjusted by increasing the amount of basic and diluted earnings per share or decreased the amount of basic and diluted loss per share by $0.01 for each of the three months ended March 31, 2018 and 2017; June 30, 2018 and 2017; September 30, 2017, and $0.02 for the three months ended December 31, 2017.