Organization and Summary of Significant Accounting Policies (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2016
USD ($)
vessel
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
|
| Significant Accounting Policies [Line Items] | |||
| Unapproved change order and claim revenue | $ | $ 0.0 | $ 0.0 | $ 0.0 |
| Workers compensation liability | $ | $ 3.4 | $ 2.6 | |
| Number of technologically advanced offshore support vessels being constructed | vessel | 2 | ||
| Number of multi-purpose service vessels being constructed | vessel | 2 | ||
| Minimum | |||
| Significant Accounting Policies [Line Items] | |||
| Estimated useful life of property, plant and equipment | 3 years | ||
| Maximum | |||
| Significant Accounting Policies [Line Items] | |||
| Estimated useful life of property, plant and equipment | 25 years | ||
| X | ||||||||||
- Definition Construction in Progress, Number of Multi-purpose Service Vessels No definition available.
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| X | ||||||||||
- Definition Construction in Progress, Number of Offshore Support Vessels No definition available.
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| X | ||||||||||
- Definition Significant Accounting Policies [Line Items] No definition available.
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| X | ||||||||||
- Definition Unapproved Change Order and Claim Revenue No definition available.
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| X | ||||||||||
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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