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Business and Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Aug. 25, 2015
Accounting Policies [Abstract]
Total cash proceeds for sale of discontinued operations aug 25 15			$ 30,000
Solitario interest in MH-LLC			80.00%
DHI percentage of interest in MH-LLC			20.00%
Solitario portion of proceeds from sale of discontinued operations			$ 24,000
DHI portion of proceeds from sale of discontinued operations aug 25 15			6,000
Professional service fees for sale of discontinued operations			$ 439
Funds repaid pursuant to a facility agreement		$ 5,000
Interest and fees paid pursuant to a facility agreement		$ 7
Warrants expired unexercised	1,624,748
Current assets in United States Treasury securities	$ 7,510
Certificates of deposit	7,499
Maximum value of each certificate of deposit	$ 250
Shares related to outstanding common stock options excluded from diluted earnings		40,000
RMB warrants exercisable excluded form diluted income		1,624,748

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