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Unusual or Infrequent Items Impacting Quarterly Results	3 Months Ended
	Dec. 31, 2016
Unusual or Infrequent Items, or Both [Abstract]
Unusual or Infrequent Items Impacting Quarterly Results	(11) Unusual or Infrequent Items Impacting Quarterly Results. Costs of operations for the land development and construction segment for the quarter ending December 31, 2015 includes a $3,000,000 positive benefit from settlement of environmental claims against our former tenant at the Riverfront on the Anacostia property (see Note 8). Gain on investment land sold for the quarter ending December 31, 2015 includes $6,277,000 gain on the sale of phase 2 of Windlass Run residential property.

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- Definition

The entire disclosure for an event or transaction that is unusual in nature or infrequent in occurrence, or both.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64828382&loc=d3e15138-107781

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