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Supplemental Cash Flow Information - Additional Information Relating to Cash Flow Activities (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Cash payments for:    
Income taxes, net $ 1,009 $ 3,588
Noncash continuing investing and financing activities:    
Incentive tax credit receivable associated with property, plant and equipment 8,125  
Long-term debt associated with additions of capitalized internal-use software and software development   759
Accounts payable associated with additions of property, plant and equipment 14,968 15,685
Series E Redeemable Preferred Stock [Member]    
Noncash continuing investing and financing activities:    
Dividends accrued on redeemable preferred 17,248 14,323
Accretion of redeemable preferred $ 4,852 $ 4,911