Consolidated Balance Sheets (USD $)	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 38,453,049	$ 41,616,657
Short-term investments	3,720,000	3,730,000
Accounts receivable, net	6,933,383	7,085,713
Inventories	13,252,222	13,670,588
Prepaid expenses and other current assets	3,118,539	3,209,031
Total current assets	65,477,193	69,311,989
Long-term investments	1,494,000	498,000
Equipment and improvements, net	3,147,091	3,304,852
Identifiable intangible assets, net	16,486,847	17,128,883
Goodwill	13,457,693	13,457,693
Other assets	140,154	141,213
Total Assets	100,202,978	103,842,630
Current Liabilities
Accounts payable	4,596,319	3,993,687
Accrued expenses and other current liabilities	3,196,972	4,132,934
Total current liabilities	7,793,291	8,126,621
Long-term liabilities	293,113	268,517
Deferred tax liability	1,678,093	1,736,299
Total Liabilities	9,764,497	10,131,437
Stockholders' Equity
Convertible preferred stock, $.01 par value; 1,468,750 shares authorized;issued and outstanding 73,332 at March 31, 2013 and December 31, 2012 (liquidation preference of $3,222,368 at March 31, 2013)	733	733
Common stock, $.01 par value; shares authorized 25,000,000; issued and outstanding 16,765,347 at March 31, 2013 and 16,524,723 at December 31, 2012	167,653	165,247
Additional paid-in capital	135,182,428	132,163,083
Accumulated other comprehensive income - cumulative translation adjustments	1,539,203	1,588,888
Accumulated deficit	(46,451,536)	(40,206,758)
Total Stockholders' Equity	90,438,481	93,711,193
Total Liabilities and Stockholders' Equity	$ 100,202,978	$ 103,842,630