Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Unrealized loss on investment	$ 221	$ 0
Net operating loss carryforward	4,450	4,208
Gross deferred tax asset	4,671	4,208
Deferred tax liabilities:
Deferred state income taxes	(105)	(4)
Unrealized gain on investments	0	(211)
Gross deferred tax liabilities	(105)	(215)
Net deferred tax asset	4,566	3,993
Valuation reserve	(4,566)	(3,993)
Deferred Tax Assets, Net	$ 0	$ 0