Basis of Presentation and Summary of Significant Accounting Policies (Textual) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 operating_segment reporting_unit	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Line Items]
Number of Operating Segments			1
Maturity Date of Highly Liquid Investments			3 months
Cash and Cash Equivalents, at Carrying Value	$ 20,090,000	$ 32,392,000	$ 20,090,000	$ 32,392,000	$ 22,130,000	$ 32,003,000
Cash	4,500,000		4,500,000
Money market funds	15,600,000		15,600,000
Number of Reportable Segments			1
Goodwill Impairment					0
Benefit from income taxes	437,000	12,000	567,000	77,000
Equity Securities [Member]
Accounting Policies [Line Items]
Gross unrealized losses			0
Debt Securities [Member]
Accounting Policies [Line Items]
Gross unrealized losses			0
Intellectual Property [Member]
Accounting Policies [Line Items]
Percentage of Undiscounted Cash Flows Greater Than Carry Value of Asset Group					37.00%
Available-for-sale Securities [Member]
Accounting Policies [Line Items]
Significant realized gains or losses from sales of marketable securities	$ 0	$ 0	$ 0	$ 0