CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
NET SALES	$ 471,438	$ 514,831	$ 919,114	$ 952,428
COST OF SALES	380,374	442,426	748,524	822,825
Gross profit	91,064	72,405	170,590	129,603
GENERAL AND ADMINISTRATIVE EXPENSES	18,495	17,852	37,887	35,903
SELLING EXPENSES	7,045	7,184	14,006	13,754
AMORTIZATION OF INTANGIBLES	4,989	5,315	9,978	10,629
IMPAIRMENT OF GOODWILL	1,663	0	1,663	0
Income from operations	58,872	42,054	107,056	69,317
OTHER INCOME (EXPENSE):
Interest expense	(3,937)	(4,802)	(8,032)	(9,975)
Other, net	(207)	8,069	(604)	2,687
Income before income taxes	54,728	45,321	98,420	62,029
INCOME TAX EXPENSE	19,197	16,672	35,365	22,907
Net income	$ 35,531	$ 28,649	$ 63,055	$ 39,122
BASIC NET INCOME PER SHARE	$ 0.55	$ 0.42	$ 0.97	$ 0.57
DILUTED NET INCOME PER SHARE	$ 0.53	$ 0.41	$ 0.95	$ 0.55