Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUES:
Net sales	$ 77,329	$ 82,709	$ 228,997	$ 235,419
Other	128	106	367	356
TOTAL REVENUE	77,457	82,815	229,364	235,775
COST OF GOODS SOLD	39,310	41,860	117,648	119,988
Gross profit	38,147	40,955	111,716	115,787
OPERATING EXPENSES:
Selling, general and administrative	21,843	22,399	68,640	68,447
Research and development	5,055	3,140	13,252	8,949
Restructuring charges	2,840	0	2,840	0
Total operating expenses	29,738	25,539	84,732	77,396
Income from operations	8,409	15,416	26,984	38,391
OTHER INCOME(EXPENSE)	155	190	572	570
Income before income taxes	8,564	15,606	27,556	38,961
PROVISION FOR INCOME TAXES	(2,136)	(4,572)	(8,593)	(11,875)
NET INCOME	$ 6,428	$ 11,034	$ 18,963	$ 27,086
NET INCOME PER SHARE
Basic (in dollars per share)	$ 0.42	$ 0.75	$ 1.25	$ 1.85
Diluted (in dollars per share)	$ 0.42	$ 0.72	$ 1.22	$ 1.79
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	15,319	14,684	15,220	14,603
Diluted (in shares)	15,488	15,324	15,497	15,139