INVESTMENTS - Company's Investments' Gross Unrealized Losses and Fair Value (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 2,011,378	$ 1,893,592
Less than 12 Months, Unrealized Losses	4,430	10,365
12 Months or More, Fair Value	312,293	668,748
12 Months or More, Unrealized Losses	449	1,544
Total, Fair Value	2,323,671	2,562,340
Total, Unrealized Losses	4,879	11,909
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	1,622,979	1,649,980
Less than 12 Months, Unrealized Losses	1,166	565
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Total, Fair Value	1,622,979	1,649,980
Total, Unrealized Losses	1,166	565
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	388,399	243,612
Less than 12 Months, Unrealized Losses	3,264	9,800
12 Months or More, Fair Value	312,293	668,748
12 Months or More, Unrealized Losses	449	1,544
Total, Fair Value	700,692	912,360
Total, Unrealized Losses	$ 3,713	$ 11,344