Annual report pursuant to section 13 and 15(d)

19. Concentrations (Details)

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19. Concentrations (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Concentrations Details    
United States $ 53,912,000 $ 37,750,000
Other 7,585,000 6,538,000
Total $ 61,497,000 $ 44,288,000