Reportable Segments (Tables)
|6 Months Ended|
Jun. 30, 2015
|Segment Reporting [Abstract]|
|Results of Operations by Reportable Segment||
The following table represents the results of operations by reportable segment:
(1)For the six months ended June 30, 2015, our largest customer, Exxon Neftegas Limited (ENL), constituted approximately 26.0 percent of our total consolidated revenues and approximately 44.3 percent of our International & Alaska Drilling segment revenues. For the six months ended June 30, 2014, our largest customer, ENL, constituted approximately 17.9 percent of our total consolidated revenues and approximately 37.1 percent of our International & Alaska Drilling segment revenues.
(2)Operating gross margin is calculated as revenues less direct operating expenses, including depreciation and amortization expense.
Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.
Reference 1: http://www.xbrl.org/2003/role/presentationRef