Condensed Consolidated Balance Sheet (Parenthetical) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 1,759,000	$ 1,230,561
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	62,866,919	62,644,969
Common stock, shares outstanding	53,320,518	53,098,568
Treasury stock at cost, shares	9,546,401	9,546,401