Organization (Details)	3 Months Ended
Mar. 31, 2013 Category
Organization (Textual) [Abstract]
Percentage of limited partnership interest in operating partnership	100.00%
Number of specific areas of real estate related assets	3

Percentage of limited partnership interest in operating partnership.

No definition available.

Name:	fur_PercentageOfLimitedPartnershipInterestInOperatingPartnership
Namespace Prefix:	fur_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration