Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment - Additional Information (Detail)

v3.2.0.727
Property and Equipment - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Property Plant And Equipment [Abstract]        
Capital expenditure $ 36,200 $ 27,000 $ 82,900 $ 48,600
Asset impairment charges $ 10,469 $ 4 $ 16,661 $ 7