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Consolidated Balance Sheets (USD $)
Mar. 31, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 82,160,251 $ 63,333,160
Accounts receivable, net of reserves of $592,420 and $593,023 at March 31, 2014 and December 31, 2013, respectively 16,466,436 18,736,845
Inventories 12,981,495 10,996,785
Current portion deferred income taxes 659,040 659,040
Prepaid expenses and other 1,217,403 865,957
Total current assets 113,484,625 94,591,787
Property and equipment, at cost 52,768,367 52,413,423
Less: accumulated depreciation (20,134,401) (19,474,712)
32,633,966 32,938,711
Long-term deposits and other 69,080 69,080
Intangible assets, net 18,439,286 18,998,409
Goodwill 9,434,289 9,443,894
Total Assets 174,061,246 156,041,881
Current liabilities:    
Accounts payable 2,742,808 2,793,911
Accrued expenses 4,497,706 5,537,881
Deferred revenue 46,412 180,433
Income taxes payable 424,993 770,276
Total current liabilities 7,711,919 9,282,501
Other long-term liabilities 1,089,708 1,133,544
Long-term deferred revenue 72,367 2,054,941
Deferred tax liability 8,617,245 7,936,864
Commitments and contingencies (Note 9)      
Stockholders’ equity:    
Preferred stock, $.01 par value; 1,250,000 shares authorized, no shares issued and outstanding at March 31, 2014 and December 31, 2013, respectively      
Common stock, $.01 par value; 30,000,000 shares authorized, 14,620,032 and 14,289,308 shares issued and outstanding at March 31, 2014 and December 31, 2013, respectively 146,200 142,893
Additional paid-in-capital 76,534,563 70,606,031
Accumulated currency translation adjustment (1,725,211) (1,699,095)
Retained earnings 81,614,455 66,584,202
Total stockholders’ equity 156,570,007 135,634,031
Total Liabilities and Stockholders’ Equity $ 174,061,246 $ 156,041,881