Asset Impairment Charges - Schedule of Fair Value Non-Financial Assets Measured and Recorded on a Non-Recurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long lived assets held and used, Carrying value	$ 7,110	$ 57,569
Long lived assets held for sale, Carrying value	14,761
Total assets	53,013	119,242
Long lived assets held and used	26,554	39,597
Non-Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long lived assets held and used, Carrying value	7,110	57,569
Long lived assets held for sale, Carrying value	14,761
Total assets	21,871
Long lived assets held and used	12,264	39,597
Long lived assets held for sale	14,290
Total nonrecurring for value measurements	26,554
Significant Other Observable Inputs (Level 2) [Member] | Non-Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long lived assets held and used	7,110	$ 57,569
Long lived assets held for sale	14,761
Total nonrecurring for value measurements	$ 21,871