Investment in Variable Interest Entity	3 Months Ended
Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investment in Variable Interest Entity	11. INVESTMENT IN VARIABLE INTEREST ENTITY We account for our investment in our West African operations as a variable interest entity, which is defined as an entity that either (a) has insufficient equity to permit the entity to finance its operations without additional subordinated financial support or (b) has equity investors who lack the characteristics of a controlling financial interest. As of March 31, 2015, we had a 49% investment in the common stock of PHI Century Limited (“PHIC”), a Ghanaian entity. We acquired our 49% interest on May 26, 2011, PHIC’s date of incorporation. The purpose of PHIC is to provide oil and gas flight services in Ghana and the West African region. For the quarter ended March 31, 2015 and 2014, we recorded a loss in equity of unconsolidated affiliate less than $0.1 million, relative to our 49% equity ownership, respectively. In addition, we had $2.8 million of trade receivables and $1.0 million of accrued liabilities as of March 31, 2015 from PHIC. We had $2.8 million of trade receivables and a $0.9 million of accrued liabilities as of December 31, 2014. The trade receivables are included in Accounts receivable—trade on our Condensed Consolidated Balance Sheets. The accrued liabilities are included in Accrued and other current liabilities on our Condensed Consolidated Balance Sheets. Our investment in the common stock of PHIC is included in Other assets on our Condensed Consolidated Balance Sheets and was $-0- million at March 31, 2015 and December 31, 2014.

11. INVESTMENT IN VARIABLE INTEREST ENTITY

We account for our investment in our West African operations as a variable interest entity, which is defined as an entity that either (a) has insufficient equity to permit the entity to finance its operations without additional subordinated financial support or (b) has equity investors who lack the characteristics of a controlling financial interest. As of March 31, 2015, we had a 49% investment in the common stock of PHI Century Limited (“PHIC”), a Ghanaian entity. We acquired our 49% interest on May 26, 2011, PHIC’s date of incorporation. The purpose of PHIC is to provide oil and gas flight services in Ghana and the West African region. For the quarter ended March 31, 2015 and 2014, we recorded a loss in equity of unconsolidated affiliate less than $0.1 million, relative to our 49% equity ownership, respectively. In addition, we had $2.8 million of trade receivables and $1.0 million of accrued liabilities as of March 31, 2015 from PHIC. We had $2.8 million of trade receivables and a $0.9 million of accrued liabilities as of December 31, 2014. The trade receivables are included in Accounts receivable—trade on our Condensed Consolidated Balance Sheets. The accrued liabilities are included in Accrued and other current liabilities on our Condensed Consolidated Balance Sheets. Our investment in the common stock of PHIC is included in Other assets on our Condensed Consolidated Balance Sheets and was $-0- million at March 31, 2015 and December 31, 2014.