Basis of Presentation and Summary of Significant Accounting Policies (Textual) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015 operating_segment reporting_unit	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Maturity Date of Highly Liquid Investments	3 months
Cash and Cash Equivalents, at Carrying Value	$ 22,159,000	$ 23,163,000	$ 26,487,000	$ 22,130,000
Cash	7,600,000
Money market funds	14,600,000
Number of Operating Segments	1
Number of Reportable Segments	1
Goodwill Impairment			0
Provision for (benefit from) income taxes	$ 12,000	$ (130,000)