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Due to Related Parties - 20F | 12 Months Ended
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Dec. 31, 2015
Due to Related Parties [Abstract] |
Due to Related Parties |
4. | Due to Related Parties:
As of December 31, 2015, due to related parties was $NIL. As of December 31, 2014, due to related parties of $105 consists of liabilities to Waterfront S.A. for common expenses for the leasehold property.

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References No definition available. + Details
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Namespace Prefix: | ship_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionDueFromToRelatedPartyAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration