Amount of outstanding long-term debt or borrowing associated with any securities or credit agreement for which there has been a default in principal, interest, sinking fund, or redemption provisions, or any breach of covenant that existed at the end of the period and subsequently has not been cured.

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- Mortgage Loan Activity (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
- Mortgage Loan Activity (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018
Debt Instrument [Line Items]
Loss on debt extinguishment		$ 4,768	$ 0
Capital City Mall, Camp Hill, Pennsylvania \| Commercial Real Estate \| Mortgages
Debt Instrument [Line Items]
Repayments of Debt	$ 58,500
Loss on debt extinguishment	4,800
Wyoming Valley Mall \| Commercial Real Estate \| Mortgages
Debt Instrument [Line Items]
Debt default, amount	$ 73,400	$ 73,400