CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Cash and cash equivalents	$ 76,058	$ 54,409
Inventories	323,289	326,359
Property, plant and equipment, net	239,748	254,894
Goodwill	179,241	181,179
Accounts payable	87,608	89,869
Accrued compensation and benefits	224,230	111,390
Accrued expenses and other liabilities	47,063	70,626
Accrued pension and other postretirement benefits ($1,946 and $2,303 attributable to the VIE)	135,339	119,549
Other noncurrent liabilities	$ 14,101	$ 12,284
Series A Redeemable convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Series A Redeemable common stock, shares authorized	0	1,838,027
Series A Redeemable convertible preferred stock, shares issued		1,838,027
Series A Redeemable convertible preferred stock, shares outstanding	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	78,193,494
Common stock, shares issued	74,093,598	21,821,256
Common stock, shares outstanding	74,093,598	21,821,256
VIE
Cash and cash equivalents	$ 12,958	$ 10,029
Inventories	14,633	15,755
Property, plant and equipment, net	10,709	11,147
Goodwill	32,312	32,312
Other assets	2,642	2,738
Accounts payable	10,397	10,250
Accrued compensation and benefits	780	1,035
Accrued expenses and other liabilities	4,121	4,516
Accrued pension and other postretirement benefits ($1,946 and $2,303 attributable to the VIE)	1,946	2,303
Other noncurrent liabilities	$ 3,368	$ 2,841
Series A Redeemable convertible preferred stock, shares issued		1,838,027