Number of vessels owned or operated by the entity as of balance sheet date.

No definition available.

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- Definition

Number of vessels sold

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Period Type:	duration

- Definition

The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Balance Type:	credit
Period Type:	duration

- Definition

Cash received or short term receivables for unsettled money transfers, money orders, consumer payments, or business to business payments. Settlement assets include clearing and settling customers payments due to and from financial institutions and may include cash and cash equivalents.

+ References

No definition available.

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Subsequent Events (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
Subsequent Events (Details) $ in Thousands	Jan. 31, 2016 USD ($) item	Mar. 31, 2015 USD ($) item	Dec. 31, 2015 USD ($) item	Dec. 31, 2014 USD ($)	Feb. 29, 2016 USD ($) item	Dec. 31, 2006 item
Subsequent Event [Line Items]
Net cash proceeds from sales			$ 31,025	$ 1,659
Number of vessels owned or operated \| item						2
Proceeds from sale of investments	$ 5,700
Handysize Vessel [Member]
Subsequent Event [Line Items]
Number of vessels sold \| item		1
Repayments of debt from sale proceeds		$ 13,500
Handysize Vessel [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Number of vessels sold \| item	2
Net cash proceeds from sales	$ 20,700
Repayments of debt from sale proceeds	25,100
Handysize Vessel [Member] \| Subsequent Event [Member] \| Additional Proceeds Used to Pay Debt [Member]
Subsequent Event [Line Items]
Repayments of debt from sale proceeds	1,500
Capesize Bulk Carrier [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Net cash proceeds from sales	10,100
Repayments of debt from sale proceeds	8,600
ATB Barge And Tug Units [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Settlement receivable amount					$ 400
Specialty Contracts [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Number of vessels owned or operated \| item					15
Saltholmen Shipping Ltd. [Member]
Subsequent Event [Line Items]
Equity investee ownership interest			30.00%
Saltholmen Shipping Ltd. [Member] \| Assets Held-for-sale [Member]
Subsequent Event [Line Items]
Equity investee ownership interest			30.00%
Saltholmen Shipping Ltd. [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from sale of investments	5,700
Saltholmen Shipping Ltd. [Member] \| Chemical Tankers [Member]
Subsequent Event [Line Items]
Number of vessels owned or operated \| item			2
Saltholmen Shipping Ltd. [Member] \| Specialty Contracts [Member]
Subsequent Event [Line Items]
Equity investee ownership interest			30.00%
Brattholmen Shipping Ltd. [Member] \| Assets Held-for-sale [Member]
Subsequent Event [Line Items]
Equity investee ownership interest			30.00%
Brattholmen Shipping Ltd. [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from sale of investments	$ 1,500
Brattholmen Shipping Ltd. [Member] \| Asphalt Tankers [Member]
Subsequent Event [Line Items]
Equity investee ownership interest				30.00%
Number of vessels owned or operated \| item			2
Brattholmen Shipping Ltd. [Member] \| Specialty Contracts [Member]
Subsequent Event [Line Items]
Equity investee ownership interest			30.00%
Oslo Bulk AS [Member]
Subsequent Event [Line Items]
Equity investee ownership interest			25.00%	25.00%
Oslo Bulk AS [Member] \| Subsequent Event [Member] \| Exchanged Ownership Interest [Member]
Subsequent Event [Line Items]
Equity investee ownership interest					25.00%
Oslo Bulk Holding Pte. Ltd. [Member]
Subsequent Event [Line Items]
Equity investee ownership interest			23.68%
Oslo Bulk Holding Pte. Ltd. [Member] \| Subsequent Event [Member] \| Exchanged Ownership Interest [Member]
Subsequent Event [Line Items]
Equity investee ownership interest					23.68%