XML 58 R18.htm IDEA: XBRL DOCUMENT
v2.4.0.6

OTHER NON-CURRENT ASSETS | 12 Months Ended
--- | ---
Dec. 31, 2012
OTHER NON-CURRENT ASSETS [Abstract] |
OTHER NON-CURRENT ASSETS | 10. OTHER NON-CURRENT ASSETS
All figures in USD '000 |  | 2012 |  |  | 2011 |
Deferred Finance Costs |  |  | 4,938 |  |  |  | 490 |
Total as of December 31, |  |  | 4,938 |  |  |  | 490 |
As of December 31, 2012, other non-current assets increased to $4.9 million from $0.5 million as of December 31, 2011. The increase in other non- current assets is a result of that the Company, in October, 2012, entered into a new $430 million revolving credit facility (the "2012 Credit Facility"). The 2005 Credit Facility was extinguished and unamortized deferred financing fees related to the 2005 Credit Facility were recognized as interest expense in the statement of operations. The finance costs of $6.1 million that were incurred in connection with the refinancing of the 2012 Credit Facility has been deferred and is being amortized over the term of the 2012 Credit Facility on a straight-line basis. The 2012 Credit Facility matures in late October 2017.

X
- Definition The entire disclosure for other non-current assets. + References No definition available. + Details
Name: | nat_OtherNonCurrentAssetsTextBlock
Namespace Prefix: | nat_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OtherAssetsNoncurrentDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration