Investments - Fair Value (Details) - Steel Excel Inc. - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	$ 1,034	$ 14,797
Gross Unrealized Losses, Less than 12 Months	(116)	(492)
Twelve Months or Greater, Fair Value	594	662
Gross Unrealized Losses, 12 Months or Greater	(146)	(202)
Fair Value
Total	1,628	15,459
Gross Unrealized Losses
Gross Unrealized Losses	(262)	(694)
Impairment	1,470
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	1,034	2,316
Gross Unrealized Losses, Less than 12 Months	(116)	(384)
Twelve Months or Greater, Fair Value	594	662
Gross Unrealized Losses, 12 Months or Greater	(146)	(202)
Fair Value
Total	1,628	2,978
Gross Unrealized Losses
Gross Unrealized Losses	$ (262)	(586)
Corporate obligations
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value		12,481
Gross Unrealized Losses, Less than 12 Months		(108)
Twelve Months or Greater, Fair Value		0
Gross Unrealized Losses, 12 Months or Greater		0
Fair Value
Total		12,481
Gross Unrealized Losses
Gross Unrealized Losses		$ (108)

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.

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