XML 15 R48.htm IDEA: XBRL DOCUMENT v2.4.0.6
Related Party Transactions (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Chairman [Member]
       
Related Party Transaction [Line Items]        
Non-cancelable operating lease transaction, monthly payments     $ 0.2  
Increase in percentage per annum in monthly lease payments (in hundredths)     3.00%  
Lease expense 0.6 0.6 1.2 1.2
O&G Industries, Inc. [Member]
       
Related Party Transaction [Line Items]        
Revenue from transactions with related party joint venture partner 6.9 0.4 8.5 1.9
Maximum percentage of revenues earned from joint ventures in current period (in hundredths) 1.00% 1.00% 1.00% 1.00%
Number of shares held by related party (in shares) 600,000 600,000 600,000 600,000
Percentage of common stock held by related party (in hundredths) 1.26%   1.26%  
JF Aviation [Member]
       
Related Party Transaction [Line Items]        
Expenses incurred with related party $ 0.1 $ 0.2 $ 0.4 $ 0.2