Fair Value Measurements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in The Prudential Variable Contract Real Property Partnership	$ 106,651,649	$ 100,673,266
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net investment income from Partnership operations	3,237,254	3,663,035	$ 4,929,261
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in The Prudential Variable Contract Real Property Partnership	106,652,000	100,673,000
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in The Prudential Variable Contract Real Property Partnership	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in The Prudential Variable Contract Real Property Partnership	0	0
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in The Prudential Variable Contract Real Property Partnership	106,652,000	100,673,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	100,673,000	99,791,000
Net recognized and unrealized gains (losses) included in earnings (or changes in net assets) from Partnership operations	5,733,000	3,224,000
Net investment income from Partnership operations	3,237,000	3,663,000
Acquisitions, issuances, and contributions	0	0
Dispositions, settlements, and distributions	(2,991,000)	(6,005,000)
Ending balance	106,652,000	100,673,000	$ 99,791,000
Unrealized gains (losses) for the year relating to Level 3 assets still held at the reporting date	$ 5,666,000	$ 2,969,000