Segment Data (Tables)

3 Months Ended

Mar. 31, 2013

Segment Data [Abstract]

Summary of operational information relative to the company's reportable segments

	Three Months Ended March 31, 2013									Three Months Ended March 31, 2012
	CEW			Video			Total			CEW			Video			Total
Product sales	$	28,002,622		$	2,180,056		$	30,182,678		$	24,757,674		$	772,131		$	25,529,805
Service revenue		—			250,974			250,974			—			111,587			111,587
Net sales		28,002,622			2,431,030			30,433,652			24,757,674			883,718			25,641,392
Cost of products sold		10,216,667			1,187,846			11,404,513			8,611,419			793,848			9,405,267
Cost of services delivered		—			578,135			578,135			—			994,866			994,866
Gross margin		17,785,955			665,049			18,451,004			16,146,255			(904,996	)		15,241,259
Sales, general & administrative		10,102,625			1,108,275			11,210,900			8,086,497			767,525			8,854,022
Research & development		988,681			1,023,875			2,012,556			840,352			1,291,868			2,132,220
Litigation judgment		—			—			—			(2,200,000	)		—			(2,200,000	)
Gain on write down / disposal of property and equipment, net		(28,960	)		—			(28,960	)		—			—			—
Income (loss) from operations	$	6,723,609		$	(1,467,101	)	$	5,256,508		$	9,419,406		$	(2,964,389	)	$	6,455,017
Purchases of property and equipment	$	253,833		$	129,256		$	383,089		$	108,981		$	168,286		$	277,267
Purchases of intangible assets		103,513			—			103,513			122,541			—			122,541
Depreciation and amortization		998,948			419,811			1,418,759			1,193,616			472,894			1,666,510