Stockholders' Equity - Additional Information (Detail) - Equity Component [Domain] - USD ($)	1 Months Ended				6 Months Ended
	Jul. 31, 2015	Mar. 31, 2015	Feb. 28, 2015	Jan. 31, 2015	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2011
Stockholders Equity Note [Line Items]
Common stock, authorized					250,000,000	250,000,000
Preferred stock, authorized					2,500,000
Common stock, shares issued					74,065,254	70,825,215
Shares issued for dividend payments					$ 315,959
Stock issued during period value interest payments					$ 693,585
Stock Issued During Period, Shares, Issued for Services					1,409,638
Common Stock Shares Outstanding		72,251,280			74,065,254	70,825,215
12% Revolving credit agreement
Stockholders Equity Note [Line Items]
Stock issued during period shares interest payments				81,648
Stock issued during period value interest payments				$ 32,659
8% Convertible promissory note
Stockholders Equity Note [Line Items]
Stock issued during period shares interest payments				678,825
Stock issued during period value interest payments				$ 271,530
8% Convertible promissory note | Subsequent Event [Member]
Stockholders Equity Note [Line Items]
Stock issued during period shares interest payments	1,121,256
Stock issued during period value interest payments	$ 347,589
12% Revolving credit agreement | Subsequent Event [Member]
Stockholders Equity Note [Line Items]
Stock issued during period shares interest payments	134,862
Stock issued during period value interest payments	$ 41,807
Consulting Services
Stockholders Equity Note [Line Items]
Stock Issued During Period, Value, Issued for Services		$ 468		$ 600
Stock Issued During Period, Shares, Issued for Services		1,667		1,667
Consulting Services | Option 1
Stockholders Equity Note [Line Items]
Stock Issued During Period, Value, Issued for Services			$ 550
Stock Issued During Period, Shares, Issued for Services			1,666
Consulting Services | Option 2
Stockholders Equity Note [Line Items]
Stock Issued During Period, Value, Issued for Services			$ 100,000
Stock Issued During Period, Shares, Issued for Services			303,031
10% Convertible Preferred Stock
Stockholders Equity Note [Line Items]
10% Convertible preferred stock, authorized					880,000	880,000	880,000
10% Convertible preferred stock, issued					682,998	682,998	759,773
10% Convertible preferred stock, outstanding					682,998	682,998
Common stock dividends, shares				357,561
Shares issued for dividend payments				$ 143,024
10% Convertible Preferred Stock | Subsequent Event [Member]
Stockholders Equity Note [Line Items]
Common stock dividends, shares	557,856
Shares issued for dividend payments	$ 172,935