Prepaid Expenses and Other Current Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Inventory	$ 0	$ 37
Income tax receivable	26	83
Prepaid maintenance contracts	98	170
Deferred installation costs	58	49
Prepaid insurance	94	65
Other prepaid expenses	128	130
Retention bonuses in escrow	0	363
Prepaid expenses and other current assets	$ 404	$ 897