Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements of Comprehensive Income
Net sales	$ 738,215	$ 546,289
Cost of sales, excluding depreciation and amortization	533,277	382,198
Depreciation and amortization	44,539	35,121
Freight and distribution expenses	65,059	43,427
Selling, general, and administrative expenses	60,740	38,194
Operating income	34,600	47,349
Foreign exchange loss	103	885
Interest expense, net	9,811	6,413
Income before provision for income taxes	24,686	40,051
Provision for income taxes	8,512	13,951
Net income	16,174	26,100
Pension and postretirement plan reclassification adjustments:
Amortization (accretion) of prior service costs	(104)	12
Amortization of net loss	621	191
Other comprehensive income, net of tax	517	203
Total comprehensive income	$ 16,691	$ 26,303
Weighted average number of shares outstanding:
Basic (in shares)	96,399,351	96,123,351
Diluted (in shares)	97,509,528	97,662,608
Net income per share:
Basic (in dollars per share)	$ 0.17	$ 0.27
Diluted (in dollars per share)	0.17	0.27
Dividends declared per common share	$ 0.10	$ 0.10