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INVESTMENTS - Company's Investments' Gross Unrealized Losses and Fair Value (Detail) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value $ 2,939,026 $ 6,854,760
12 Months or More, Fair Value 3,606,468 149,838
Total, Fair Value 6,545,494 7,004,598
Less than 12 months, Unrealized Losses (20,098) (46,324)
12 Months or More, Unrealized Losses (10,697) (123)
Total, Unrealized Losses (30,795) (46,447)
Obligations of U.S. Treasury, U.S. government corporations and agencies    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value   904,083
12 Months or More, Fair Value   0
Total, Fair Value   904,083
Less than 12 months, Unrealized Losses   (349)
12 Months or More, Unrealized Losses   0
Total, Unrealized Losses   (349)
Certificates of deposit    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value 0 1,975,245
12 Months or More, Fair Value 1,996,922 0
Total, Fair Value 1,996,922 1,975,245
Less than 12 months, Unrealized Losses 0 (24,755)
12 Months or More, Unrealized Losses (3,078) 0
Total, Unrealized Losses (3,078) (24,755)
Corporate debt securities    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value 2,939,026 3,975,432
12 Months or More, Fair Value 1,609,546 149,838
Total, Fair Value 4,548,572 4,125,270
Less than 12 months, Unrealized Losses (20,098) (21,220)
12 Months or More, Unrealized Losses (7,619) (123)
Total, Unrealized Losses $ (27,717) $ (21,343)