Property, Plant and Equipment - Additional information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2016 a	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		$ 297,056	$ 285,864
Depreciation expense		14,300	14,800	$ 15,900
Prepaid expenses and other assets		13,409	6,288
Olive Branch Assets [Member]
Property, Plant and Equipment [Line Items]
Loss on asset reclassification		500
Prepaid expenses and other assets		6,200
Construction in Process [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		$ 11,032	$ 6,707
Subsequent Event [Member] | Olive Branch Assets [Member]
Property, Plant and Equipment [Line Items]
Area of land sold | a	62