Prepaid Expenses and Other Current Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Inventory	$ 37	$ 0
Income tax receivable	83	0
Prepaid maintenance contracts	170	146
Deferred installation costs	49	54
Prepaid insurance	65	34
Prepaid rent	0	0
Other prepaid expenses	130	96
Retention bonuses in escrow	363	0
Total prepaid expenses and other current assets	$ 897	$ 330