Quarterly Results of Operations (unaudited) (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	2013
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Net Sales
Net sales of tangible products	$	225,121		$	239,909		$	249,919		$	269,583
Revenue from services and software		11,816			13,251			13,604			14,956
Total net sales		236,937			253,160			263,523			284,539
Cost of Sales
Cost of sales of tangible products		117,111			125,664			128,191			136,547
Cost of sales services and software		6,761			6,589			6,722			6,964
Cost of sales		123,872			132,253			134,913			143,511
Gross Profit		113,065			120,907			128,610			141,028
Operating expenses:
Selling and marketing		33,515			33,830			34,395			36,280
Research and development		21,858			23,201			22,376			23,712
General and administrative		25,277			24,053			22,452			24,434
Amortization of intangible assets		1,863			1,863			1,831			1,826
Acquisition costs		482			618			268			3,322
Exit and restructuring costs		1,895			1,101			519			2,375
Total operating expenses		84,890			84,666			81,841			91,949
Operating income		28,175			36,241			46,769			49,079
Other income (loss)
Investment income		677			473			550			666
Foreign exchange loss		(98	)		(462	)		(173	)		209
Other, net		10			1,464			(5	)		252
Total other income		589			1,475			372			1,127
Income from continuing operations before income taxes		28,764			37,716			47,141			50,206
Income taxes		5,222			7,158			8,541			8,681
Income from continuing operations		23,542			30,558			38,600			41,525
Income from discontinued operations, net of tax		0			8			0			125
Net income	$	23,542		$	30,566		$	38,600		$	41,650
Basic earnings per share:
Income from continuing operations	$	0.46		$	0.60		$	0.76		$	0.83
Income from discontinued operations		0.00			0.00			0.00			0.00
Net Income	$	0.46		$	0.60		$	0.76		$	0.83
Diluted earnings per share:
Income from continuing operations	$	0.46		$	0.60		$	0.76		$	0.82
Income from discontinued operations		0.00			0.00			0.00			0.00
Net Income	$	0.46		$	0.60		$	0.76		$	0.82
Basic weighted average shares outstanding		50,980			50,990			50,590			50,289
Diluted weighted average and equivalent shares outstanding		51,366			51,283			50,924			50,666

	2012
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Net Sales
Net sales of tangible products	$	232,476		$	234,708		$	239,786		$	241,257
Revenue from services and software		11,399			12,369			12,251			11,922
Total net sales		243,875			247,077			252,037			253,179
Cost of Sales
Cost of sales of tangible products		119,033			119,980			118,751			121,869
Cost of sales services and software		4,959			6,720			6,362			6,850
Cost of sales		123,992			126,700			125,113			128,719
Gross Profit		119,883			120,377			126,924			124,460
Operating expenses:
Selling and marketing		32,114			32,158			32,321			33,313
Research and development		20,416			22,336			22,007			22,605
General and administrative		24,320			24,402			22,481			20,964
Amortization of intangible assets		770			770			1,670			1,463
Acquisition costs		254			1,252			566			1,037
Exit and restructuring costs		0			0			0			960
Asset impairment charge		0			0			9,114			0
Total operating expenses		77,874			80,918			88,159			80,342
Operating income		42,009			39,459			38,765			44,118
Other income (loss)
Investment income		592			826			541			526
Foreign exchange loss		(342	)		(80	)		(514	)		(5)
Other, net		(364	)		(486	)		(294	)		(577)
Total other income (loss)		(114	)		260			(267	)		(56)
Income from continuing operations before income taxes		41,895			39,719			38,498			44,062
Income taxes		11,731			9,366			11,917			9,263
Income from continuing operations		30,164			30,353			26,581			34,799
Income from discontinued operations, net of tax		0			300			516			191
Net income	$	30,164		$	30,653		$	27,097		$	34,990
Basic earnings per share:
Income from continuing operations	$	0.58		$	0.58		$	0.52		$	0.69
Income from discontinued operations		0.00			0.01			0.01			0.00
Net Income	$	0.58		$	0.59		$	0.53		$	0.69
Diluted earnings per share:
Income from continuing operations	$	0.58		$	0.58		$	0.51		$	0.68
Income from discontinued operations		0.00			0.01			0.01			0.00
Net Income	$	0.58		$	0.59		$	0.52		$	0.68
Basic weighted average shares outstanding		51,998			51,771			51,566			50,968
Diluted weighted average and equivalent shares outstanding		52,301			52,030			51,809			51,262