Stockholders' Equity (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity [Line Items]
Common Stock, Shares Authorized	110,000,000		110,000,000
Common Stock, Par Or Stated Value Per Share	$ 0.001		$ 0.001
Common Stock, Shares, Outstanding	82,730,134		82,520,696
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	825,029
Proceeds from Stock Options Exercised	$ 0	$ 670,458
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	209,438
Restricted Stock [Member]
Stockholders' Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance	250,000	500,000	500,000	500,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested	$ 185,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 147,500