Stockholders' Equity (Details Textual) - shares	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Nov. 25, 2015
Stockholders Equity [Line Items]
Beneficial Ownership Percentage Held By Affiliates						4.99%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Total				186,957
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	831,193			1,189,214
Additional Amount to Declare Stockholder as an Acquiring Person Percentage						0.50%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			100,000	200,000	112,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	805,994			852,244
Class of Warrant or Right, Outstanding	1,051,358		1,922,781	1,051,358	1,922,781
Warrant [Member] | Liability Portion [Member]
Stockholders Equity [Line Items]
ClassOfWarrantOrRightOutstandingNumberOfSharesExpired		500,000		371,423
2007 Long Term Incentive Plan [Member]
Stockholders Equity [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	3,500,000			3,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	10,300,000			10,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	3,400,000			3,400,000
2007 Long Term Incentive Plan [Member] | Maximum [Member]
Stockholders Equity [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	4,600,000			4,600,000