Stock-Based Compensation (Detail Textuals) - Unrestricted Stock Grants - 2001 Nonqualified Stock Plan - Directors, officers and employees - USD ($)	1 Months Ended					3 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2016	Mar. 28, 2016	Jan. 31, 2016	Jul. 31, 2015	Mar. 31, 2015	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
2016 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)		152,000
Number of shares issuable in future		76,000
Stock-based compensation expense							$ 558,000
Stock based compensation expense charged						$ 184,000	374,000
Remaining stock based compensation expense						$ 184,000	$ 184,000
Number of shares issued (in shares)	58,902
Number of common stock shares surrendered by employees withholding taxes	17,098
Common stock value surrendered by employees withholding taxes	$ 74,000
2015 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)					152,000
Stock-based compensation expense								$ 682,000
Number of shares issued (in shares)			57,151	58,862
Number of common stock shares surrendered by employees withholding taxes			18,849	17,138
Common stock value surrendered by employees withholding taxes			$ 61,000	$ 69,000