Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of Significant Accounting Policies [Abstract]
Number of shares excluded from the computation of net loss per share			12,157,634	12,951,625
Reclassification of general and administrative expenses		$ 200		$ 600
Reclassification of restricted cash				800
Foreign currency adjustment	$ 509		$ 509