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Supplemental Cash Flow Information - Additional Information Relating to Cash Flow Activities (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Cash payments for:        
Income taxes, net     $ 1,040 $ 380
Noncash continuing investing and financing activities:        
Accounts payable and accrued liabilities associated with additions of property, plant and equipment     13,967 34,681
Long-term debt associated with additions of capitalized internal-use software and software development       759
Series E Redeemable Preferred Stock [Member]        
Noncash continuing investing and financing activities:        
Dividends accrued on redeemable preferred     11,325 14,979
Accretion of redeemable preferred $ 1,618 $ 2,241 $ 3,217 $ 4,484