Fair Value Measurements (Details) (Fair Value Measurements Recurring [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fair Value Inputs Level1 [Member] | Money Market Funds [Member]
Fair Value Measurements
Money market funds	$ 6,153	$ 10,504
Fair Value Inputs Level2 [Member] | Secured Debt [Member]
Fair Value Measurements
Term loan	15,000	15,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Secured Debt [Member]
Fair Value Measurements
Term loan	15,000	15,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Money Market Funds [Member]
Fair Value Measurements
Money market funds	$ 6,153	$ 10,504