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Description of the Business (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2012
Outside of North America
item
Sep. 30, 2012
S-64E model Aircranes
item
Sep. 30, 2012
S-64F model Aircranes
item
Sep. 30, 2012
Common Stock
Apr. 30, 2012
Common Stock
Sep. 30, 2012
European Air-Crane, S.p.A.
SIMA
Sep. 30, 2012
EACM
Layang-Layang Services Sdn. Bhd.
Description of the Business                  
Equity interest held (as a percent)               60.00% 49.00%
Number of shares issued           4,800,000      
Number of shares purchased by the existing stockholders           1,050,000      
Share price (in dollars per share)           $ 8.00      
Gross proceeds from the IPO           $ 38.4      
Net proceeds from the IPO           31.5      
Underwriting discounts and commissions in connection with IPO           2.1      
Offering costs in connection with IPO           $ 4.8      
Common shares outstanding 9,602,970 0       4,802,970 4,802,970    
Number of aircranes operated     5 12 5