Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
REVENUES:
Net sales	$ 81,323us-gaap_SalesRevenueGoodsNet	$ 73,113us-gaap_SalesRevenueGoodsNet
Other	161us-gaap_OtherSalesRevenueNet	117us-gaap_OtherSalesRevenueNet
TOTAL REVENUE	81,484us-gaap_Revenues	73,230us-gaap_Revenues
COST OF GOODS SOLD	38,970us-gaap_CostOfGoodsSold	37,203us-gaap_CostOfGoodsSold
Gross profit	42,514us-gaap_GrossProfit	36,027us-gaap_GrossProfit
OPERATING EXPENSES:
Selling, general and administrative	20,174	22,519
Research and development	4,308us-gaap_ResearchAndDevelopmentExpense	3,631us-gaap_ResearchAndDevelopmentExpense
Legal Settlement	7,059us-gaap_LitigationSettlementExpense	0us-gaap_LitigationSettlementExpense
Total operating expenses	31,541us-gaap_OperatingExpenses	26,150us-gaap_OperatingExpenses
Income from operations	10,973us-gaap_OperatingIncomeLoss	9,877us-gaap_OperatingIncomeLoss
OTHER INCOME	526us-gaap_NonoperatingIncomeExpense	210us-gaap_NonoperatingIncomeExpense
Income before income taxes	11,499	10,087
PROVISION FOR INCOME TAXES	(1,813)us-gaap_IncomeTaxExpenseBenefit	(3,430)us-gaap_IncomeTaxExpenseBenefit
NET INCOME	$ 9,686us-gaap_ProfitLoss	$ 6,657us-gaap_ProfitLoss
NET INCOME PER SHARE
Basic (in dollars per share)	$ 0.62us-gaap_EarningsPerShareBasic	$ 0.44us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 0.60us-gaap_EarningsPerShareDiluted	$ 0.43us-gaap_EarningsPerShareDiluted
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	15,693	15,097
Diluted (in shares)	16,234	15,395

Total costs related to goods produced and sold during the reporting period.

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