Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net sales	$ 311,818	$ 342,008
Costs of goods sold	209,215	222,494
Gross profit	102,603	119,514
Operating expenses:
Selling and service	30,128	27,969
Research and development	8,163	7,746
General and administrative	14,206	13,148
Amortization of intangible assets	5,195	5,345
Total operating expenses	57,692	54,208
Income from operations	44,911	65,306
Other (expense) income:
Interest expense	(11,268)	(11,689)
Investment income	37	39
Loss on extinguishment of debt	(1,368)
Other, net	(1,609)	568
Total other expense, net	(14,208)	(11,082)
Income before provision for income taxes	30,703	54,224
Provision for income taxes	11,018	19,523
Net income	19,685	34,701
Net income per common share - basic: (in Dollars per share)	$ 0.29	$ 0.51
Weighted average common shares outstanding - basic: (in Shares)	68,806,337	68,421,800
Net income per common share - diluted: (in Dollars per share)	$ 0.28	$ 0.50
Weighted average common shares outstanding - diluted: (in Shares)	70,088,935	70,008,490
Comprehensive income	$ 12,867	$ 34,272