Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Financial assets subject to fair value measurements (Details)

v2.4.0.6
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Financial assets subject to fair value measurements (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Fair Value
   
Cash and cash equivalents $ 21,983,000 $ 20,660,842
Corporate bond 547,000 556,376
Total 22,530,000 21,217,218
Fair Value Measurements, Level 1
   
Cash and cash equivalents 21,983,000 20,660,842
Corporate bond      
Total 21,983,000 20,660,842
Fair Value Measurements, Level 2
   
Cash and cash equivalents      
Corporate bond 547,000 556,376
Total 547,000 556,376
Fair Value Measurements, Level 3
   
Cash and cash equivalents      
Total