Investment Securities - Summary of Available for Sale Securities (Detail) (USD $)	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Cost	$ 729,814
Gains in Accumulated Other Comprehensive Income
Losses in Accumulated Other Comprehensive Income
Estimated Fair Value (Level 1 Inputs)	729,814
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost	729,814
Gains in Accumulated Other Comprehensive Income
Losses in Accumulated Other Comprehensive Income
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost	729,814
Gains in Accumulated Other Comprehensive Income
Losses in Accumulated Other Comprehensive Income
Quoted Prices in Active Markets (Level 1 Inputs) [Member]
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value (Level 1 Inputs)	729,814
Quoted Prices in Active Markets (Level 1 Inputs) [Member] | Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value (Level 1 Inputs)	729,814
Quoted Prices in Active Markets (Level 1 Inputs) [Member] | Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value (Level 1 Inputs)	$ 729,814