Prepaid Expenses and Other Current Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Prepaid Expenses and Other Current Assets
Prepaid expenses	$ 856	$ 790
Prepaid insurance	630	8
Prepaid taxes	314	155
Other current assets	1
Total prepaid expenses and other current assets	$ 1,801	$ 953