XML 78 R63.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Note 18 - Subsequent Events (Detail) (Purchase of Five Vessels [Member], Subsequent Event [Member], USD $) | Mar. 31, 2013
--- | ---
Purchase of Five Vessels [Member] | Subsequent Event [Member] |
Contractual Obligation | $ 93,700,000

X
- Definition Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. + References No definition available. + Details
Name: | us-gaap_ContractualObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant