Asset Disposals - Additional Information (Detail) |
3 Months Ended | |||
|---|---|---|---|---|
|
Jun. 30, 2016
USD ($)
Aircraft
|
Mar. 31, 2016
USD ($)
Aircraft
|
Jun. 30, 2015
USD ($)
|
Mar. 31, 2015
USD ($)
|
|
| Assets Held For Sale And Impairments [Line Items] | ||||
| Cash realized from sale of assets | $ | $ 10,100,000 | $ 900,000 | ||
| Gain (loss) on disposal of assets | $ | $ 4,300,000 | $ (400,000) | $ 0 | $ 0 |
| Oil and Gas [Member] | Light Aircraft [Member] | ||||
| Assets Held For Sale And Impairments [Line Items] | ||||
| Number of aircraft sold | Aircraft | 4 | 1 | ||
| Oil and Gas [Member] | Medium Aircraft [Member] | ||||
| Assets Held For Sale And Impairments [Line Items] | ||||
| Number of aircraft sold | Aircraft | 3 | |||