Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Summary of Significant Accounting Policies (Textual)
Share-based Compensation	$ 364	$ 386
Revenues	14,087	14,122
Multiple Deliverable Elements [Member]
Summary of Significant Accounting Policies (Textual)
Revenues	$ 5,300	$ 7,600