XML 45 R61.htm IDEA: XBRL DOCUMENT v2.4.1.9
Kommandor LLC (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Feb. 28, 2014
Dec. 31, 2013
Kommandor LLC [Abstract]      
Oil and gas processing equipment, percentage of cost 100.00%hlx_OilAndGasProcessingEquipmentPercentageOfCostIncurredByParent    
Ownership percentage     81.00%us-gaap_MinorityInterestOwnershipPercentageByParent
Acquisition of noncontrolling interests $ 20,085us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries    
Noncontrolling interest, ownership percentage of noncontrolling owners   19.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners