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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (UNAUDITED) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Revenues:    
Revenue $ 7,105,515 $ 8,249,387
Cost of revenue 4,445,129 6,125,400
Inventory obsolescence 0 3,692,895
Gross profit (loss) 2,660,386 (1,568,908)
Operating expenses:    
Selling expenses 820,405 812,054
General and administrative expenses 423,927 573,012
Research and development expenses 444,407 166,415
Bad debt expense (benefit) 3,308,129 (119,930)
Total operating expenses 4,996,868 1,431,551
Loss from operations (2,336,482) (3,000,459)
Other income (expense):    
Interest income 21,783 1,586
Interest expense 56,447 82,445
Net other expense (34,664) (80,859)
Loss before income taxes (2,371,146) (3,081,318)
Income tax (expense) benefit (19,347) 269,011
Net loss (2,390,493) (2,812,307)
Other comprehensive income - foreign currency translation adjustment (1,114,984) 819,767
Comprehensive (loss) income $ (3,505,477) $ (1,992,540)
Loss per share:    
Basic $ (0.05) $ (0.06)
Diluted $ (0.05) $ (0.06)