Nature Of Operations (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended						6 Months Ended
	Feb. 25, 2013	Jun. 30, 2013	Feb. 28, 2013 Jefferies [Member]	Jun. 30, 2014 National Beef [Member]	Jun. 30, 2014 Idaho Timber [Member] item	Jun. 30, 2014 Conwed Plastics [Member] item	Jun. 30, 2014 Berkadia [Member]	Jun. 30, 2014 Garcadia [Member] item	Jun. 30, 2014 HomeFed Corporation [Member]	Jun. 30, 2014 Linkem [Member]	Jun. 30, 2014 Harbinger [Member] segment	Jun. 30, 2014 Beef Processing Facility [Member] National Beef [Member] item	Jun. 30, 2014 Consumer-Ready Facility [Member] National Beef [Member] item	Jun. 30, 2014 Tanning Facility [Member] National Beef [Member] item
Foreign facilities						1
Domestic facilities					10	4						2	3	1
Business acquisition, share conversion ratio			0.81
Shares of common stock owned			58,006,024						9,460,563		41,600,000
Percentage of outstanding common stock owned			28.00%								20.00%
Percentage interest owned in subsidiary				78.90%
Spin off of Crimson Wine Group, Ltd.	$ 197,000	$ 197,000
Shares of Crimson received for every 10 shares of Leucadia common shares	1
Percentage of company acquired						80.00%
Joint venture ownership percentage							50.00%
Number of automobile dealerships								22
Percentage of ownership owned							50.00%		64.00%	40.20%
Percentage of ownership upon conversion of note										53.00%
Number of operating segments											4