CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Cash and restricted cash	$ 47,722	$ 79,140
Inventories	363,962	323,289
Property, plant and equipment, net	228,922	239,748
Goodwill	185,941	179,241
Other assets	33,833	32,247
Accounts payable	92,759	87,608
Accrued compensation and benefits	80,189	224,230
Accrued expenses and other liabilities	52,442	47,063
Accrued pension and other postretirement benefits	130,160	135,339
Other noncurrent liabilities	$ 16,701	$ 14,101
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	74,479,319	74,093,598
Common stock, shares outstanding	74,479,319	74,093,598
VIE
Cash and restricted cash	$ 13,086	$ 13,811
Inventories	13,692	14,633
Property, plant and equipment, net	10,240	10,709
Goodwill	32,312	32,312
Other assets	2,738	2,642
Accounts payable	10,587	10,397
Accrued compensation and benefits	780	780
Accrued expenses and other liabilities	2,719	4,121
Accrued pension and other postretirement benefits	1,908	1,946
Other noncurrent liabilities	$ 4,689	$ 3,368