Employee Benefit Plans (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended			20 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Employee Stock Purchase Plan	Dec. 31, 2013 Employee Stock Purchase Plan	May 31, 2012 Employee Stock Purchase Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Employer matching contributions	$ 0.2	$ 0.4
Common stock, shares authorized	25,000,000	25,000,000			100,000
Percentage of fair market value of per share price of common stock			95.00%
Number of shares issued under ESPP				557