Segment Data (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Summary of Operational Information Relative to the Company's Reportable Segments

Information relative to the Company’s reportable segments is as follows:

	Three Months Ended June 30, 2013							Three Months Ended June 30, 2012
	CEW		Video			Total		CEW			Video			Total
Product sales	$	30,272,853	$	1,569,551		$	31,842,404	$	26,931,727		$	1,164,128		$	28,095,855
Service revenue		—		333,393			333,393		—			126,588			126,588
Net sales		30,272,853		1,902,944			32,175,797		26,931,727			1,290,716			28,222,443
Cost of products sold		10,410,910		1,355,699			11,766,609		9,783,886			736,924			10,520,810
Cost of services delivered		—		666,825			666,825		—			1,199,260			1,199,260
Gross margin		19,861,943		(119,580	)		19,742,363		17,147,841			(645,468	)		16,502,373
Sales, general & administrative		9,417,473		1,522,612			10,940,085		7,668,654			735,957			8,404,611
Research & development		977,508		1,014,556			1,992,064		922,084			1,116,746			2,038,830
Income (loss) from operations	$	9,466,962	$	(2,656,748	)	$	6,810,214	$	8,557,103		$	(2,498,171	)	$	6,058,932
Purchases of property and equipment	$	344,098	$	111,808		$	455,906	$	181,847		$	120,725		$	302,572
Purchases of intangible assets		90,074		8,606			98,680		129,809			—			129,809
Depreciation and amortization		973,736		555,771			1,529,507		1,088,838			640,095			1,728,933
	Six Months Ended June 30, 2013							Six Months Ended June 30, 2012
	CEW		Video			Total		CEW			Video			Total
Product sales	$	58,275,475	$	3,749,607		$	62,025,082	$	51,689,401		$	1,936,259		$	53,625,660
Service revenue		—		584,367			584,367		—			238,175			238,175
Net sales		58,275,475		4,333,974			62,609,449		51,689,401			2,174,434			53,863,835
Cost of products sold		20,627,577		2,543,545			23,171,122		18,395,306			1,530,772			19,926,078
Cost of services delivered		—		1,244,960			1,244,960		—			2,194,125			2,194,125
Gross margin		37,647,898		545,469			38,193,367		33,294,095			(1,550,463	)		31,743,632
Sales, general & administrative		19,491,138		2,630,887			22,122,025		15,755,151			1,503,482			17,258,633
Research & development		1,966,189		2,038,431			4,004,620		1,762,436			2,408,614			4,171,050
Litigation judgment		—					—		(2,200,000	)		—			(2,200,000	)
Income (loss) from operations	$	16,190,571	$	(4,123,849	)	$	12,066,722	$	17,976,508		$	(5,462,559	)	$	12,513,949
Purchases of property and equipment	$	597,931	$	241,064		$	838,995	$	313,291		$	289,011		$	602,302
Purchases of intangible assets		193,587		8,606			202,193		251,987			—			251,987
Depreciation and amortization		1,972,684		975,582			2,948,266		2,282,454			1,112,989			3,395,443