Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Fixed Assets (Details Textual)		12 Months Ended
Fixed Assets (Details Textual)	Jul. 05, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Dry bulk vessels			14
rental expense per year under bareboat charter, next 5 years	$ 365,000
Nordic Bulk Barents Ltd. and Nordic Bulk Bothnia Ltd [Member]
Property, Plant and Equipment [Line Items]
Asset Impairment Charges		$ 5,400,000