Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v2.4.0.8
Subsequent Events - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended 12 Months Ended 3 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Sep. 30, 2014
Scenario, Forecast [Member]
Sep. 30, 2014
Scenario, Forecast [Member]
Exchangeable Shares Of Canadian Subsidiary [Member]
Subsequent Event [Line Items]        
Cash paid for acquisition $ 83,200 $ 341,100 $ 84,400  
Number of shares issued for acquisition of company 459,392 3,547,482 200,000 800,000
Aggregate value of common and exchangeable shares $ 38,641 $ 88,895 $ 31,500