Discontinued Operations - Summary of Carrying Amounts of Major Classes of Assets and Liabilities of Discontinued Operations (Detail) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disposal Groups Including Discontinued Operations Income Statement Balance Sheet and Additional Disclosures [Abstract]
Cash	$ 8,134,000	$ 3,700,000	$ 9,100,000
Accounts receivable, net	46,114,000
Inventories	47,714,000
Other current assets	4,755,000
Total current assets of discontinued operations	106,717,000
Property, plant and equipment, net	92,373,000
Goodwill	8,909,000
Intangible assets, net	1,718,000
Other non-current assets	940,000
Total non-current assets of discontinued operations	103,940,000
Total assets of discontinued operations	210,657,000
Accounts payable	31,014,000
Accrued salaries, wages and benefits	9,234,000
Income taxes payable	2,825,000
Other current liabilities	2,176,000
Total current liabilities of discontinued operations	45,249,000
Deferred tax liabilities	4,173,000
Accrued post-employment benefits	4,707,000
Other non-current liabilities	3,731,000
Total non-current liabilities of discontinued operations	12,611,000
Total liabilities of discontinued operations	$ 57,860,000