Supplemental Cash Flow Information - Additional Information Relating to Cash Flow Activities (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash refunds for:
Income taxes, net	$ 380	$ (3,878)
Noncash continuing investing and financing activities:
Accounts receivable, accounts payable and accrued liabilities associated with additions of property, plant and equipment	34,681	64,640
Long-term debt associated with additions of capitalized internal-use software and software development	759	$ 1,802
Series E Redeemable Preferred Stock [Member]
Noncash continuing investing and financing activities:
Dividend accrued on Series E redeemable preferred	14,979
Accretion of Series E redeemable preferred stock	$ 4,484