XML 31 R45.htm IDEA: XBRL DOCUMENT v2.4.0.6
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Balance at beginning of period $ 92,723 $ 162,723 $ 186,568
Charged to costs and expenses 0 0 0
Deductions 0 70,000 [1] 23,845 [1]
Balance at end of period $ 92,723 $ 92,723 $ 162,723
[1] Recovery of previously reserved receivables.