Stockholders' Equity (Details Textual) - USD ($)	1 Months Ended			12 Months Ended
	Nov. 25, 2015	May 23, 2014	Mar. 25, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 17, 2016	Dec. 31, 2008
Stockholders Equity [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				1,051,358	1,422,781	4,495,556
Common Stock Aggregate Amount Equity Offering		$ 15,000,000	$ 15,000,000
Stock Sales Agent Commission Percentage				3.00%
Equity Offering Remaining Aggregate Sales Available				$ 3,000,000
Proceeds from Issuance of Common Stock				3,801,720	$ 973,132	$ 18,141,935
Offering Costs In Connection With Controlled Equity Offering Sales Agreement						100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value				2,800,000	300,000	200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value				300,000	700,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options				$ 400,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				1 year 8 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value				$ 900,000	$ 800,000	$ 1,400,000
Fair Value Assumptions, Weighted Average Volatility Rate				50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 1.28	$ 1.13	$ 1.30
Beneficial Ownership Percentage Held By Affiliates	4.99%
Additional Amount to Declare Stockholder as an Acquiring Person Percentage	0.50%
Dividends Payable, Amount Per Share							$ 2.91
Equity [Member]
Stockholders Equity [Line Items]
Proceeds from Issuance of Common Stock						$ 17,800,000
Restricted Stock [Member]
Stockholders Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				852,244	877,244	0
Warrant [Member]
Stockholders Equity [Line Items]
Number of common shares expired underlying stock purchase warrants				371,423
Common Stock [Member]
Stockholders Equity [Line Items]
Stock Issued During Period, Shares, New Issues						10,520,454
2007 Long Term Incentive Plan [Member]
Stockholders Equity [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance								3,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				10,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				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