Business Segments (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Business segments (in thousands)

	Three Months ended
	March 31,
		2018		2017
Revenues:
Asset management	$	8,128		7,285
Mining royalty lands		1,772		1,762
Land development and construction		297		275
Riverfront on the Anacostia		2,425		—
	$	12,622		9,322
Operating profit (Loss):
Before corporate expenses: Asset management	$	3,767		3,501
Mining royalty lands		1,618		1,625
Land development and construction		(387	)	(395	)
Riverfront on the Anacostia		(714	)	—
Corporate expenses:
Allocated to asset management		(788	)	(753	)
Allocated to mining royalty		(77	)	(66	)
Allocated to land development and construction		(419	)	(508	)
Allocated to Riverfront on the Anacostia		(142	)	—
		(1,426	)	(1,327	)
	$	2,858		3,404
Interest expense:
Asset management	$	290		248
Riverfront on the Anacostia		953		—
	$	1,243		248
Depreciation, depletion and amortization:
Asset management	$	2,016		1,965
Mining royalty lands		54		39
Land development and construction		57		55
Riverfront on the Anacostia		2,156		—
	$	4,283		2,059
Capital expenditures:
Asset management	$	902		2,259
Mining royalty lands		—		—
Land development and construction		925		1,470
Riverfront on the Anacostia		(243	)	—
	$	1,584		3,729
		March 31,		December 31,
Identifiable net assets		2018		2017
Asset management	$	186,711		179,654
Mining royalty lands		38,579		38,656
Land development and construction		39,220		46,684
Riverfront on the Anacostia		142,121		144,386
Cash items		6,961		4,524
Unallocated corporate assets		4,392		4,830
	$	417,984		418,734