Consolidated Statements of Income - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
REVENUES:
Net sales	$ 1,292,166,000	$ 379,339,000	$ 341,254,000
Other	447,000	33,000	414,000
TOTAL REVENUE	1,292,613,000	379,372,000	341,668,000
COST OF GOODS SOLD	866,518,000	177,974,000	160,871,000
Gross profit	426,095,000	201,398,000	180,797,000
OPERATING EXPENSES:
Selling, general and administrative	303,953,000	89,426,000	83,216,000
Research and development	51,253,000	12,955,000	15,714,000
Restructuring, strategic transaction and integration expenses	77,967,000	15,348,000	8,451,000
Change in fair value of contingent earn-out	8,000,000	0	0
Gain on sale of building	0	0	(1,086,000)
Legal settlements, net	0	0	1,798,000
Impairment of assets held for sale	0	728,000	4,139,000
Total operating expenses	441,173,000	118,457,000	112,232,000
(Loss) Income from operations	(15,078,000)	82,941,000	68,565,000
Bargain Purchase Gain	70,890,000	1,456,000	0
Interest Expense	(2,047,000)	(118,000)	(39,000)
OTHER (EXPENSE) INCOME,NET	(2,482,000)	885,000	1,173,000
Income before income taxes	51,283,000	85,164,000	69,699,000
BENEFIT (PROVISION) FOR INCOME TAXES	17,361,000	(22,080,000)	(24,714,000)
Net Income	$ 68,644,000	$ 63,084,000	$ 44,985,000
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Basic	$ 3.50	$ 3.90	$ 2.84
Diluted	$ 3.29	$ 3.66	$ 2.73
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	19,614	16,168	15,848
Diluted (in shares)	20,858	17,254	16,496