Equity investment ownership percentage.

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- Definition

Settlement shares per tangible unit.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

The amount by which the company's Total Capital exceeds the minimum required for capital adequacy purposes.

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The fair value of assets acquired in noncash investing or financing activities.

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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Amount of increase (decrease) in the investments in and advances to affiliates.

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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Amount of income (expense) related to nonoperating activities, classified as other.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Stockholder's Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Apr. 30, 2017	Dec. 31, 2016	Dec. 31, 2013	Dec. 31, 2010
Accumulated Other Comprehensive Income Loss [Line Items]
Common stock issued to holders of TEU	292,502,927	40,800,000	249,628,949	292,502,927	249,628,949	40,800,000	249,690,281
Settlement rate per tangible equity unit		$ 3.5496				$ 3.5496
Decrease in noncontrolling interest				$ (6,775)
Accounts payable				338,906	$ (110,196)
Acquisition of NCI				(6,775)
Other non-operating expense, net	$ 803		$ 5,237	$ (1,074)	(1,005)
Oceanteam ASA [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Purchase of vessel, cash consideration		$ 11,000
Note payable assumed		5,000
Decrease in noncontrolling interest		9,000
Accounts payable		5,000
Capital-in-excess		2,000
Acquisition of NCI		$ 9,000
THHE Fabricators Sdn. Bhd [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Percentage of interest acquired in subsidiary								30.00%
Decrease in investments in unconsolidated affiliates					12,000
Other non-operating expense, net					$ 5,000
Berlian McDermott Sdn, Bhd, [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Percentage of interest acquired in subsidiary			30.00%		30.00%
Decrease in noncontrolling interest					$ 18,000
Fair value of asset surrendered			$ 17,000
Acquisition of NCI					$ 18,000
Berlian McDermott Sdn, Bhd, [Member] \| TH Heavy Engineering Berhad [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Noncontrolling interest acquired by noncontrolling owners								30.00%
North Ocean 105 [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Percentage of interest acquired in subsidiary									75.00%
Ownership percentage in Oceanteam ASA's		25.00%