Income Taxes - Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets, Net [Abstract]
Tax benefit of operating loss carry forward	$ 16,304	$ 16,469
Reserves and allowances	67	120
Accrued expenses	355	258
Goodwill	262	317
Equity based compensation	734	542
Fixed assets	230	16
Texas margin tax temporary credit	260	0
Total deferred tax assets	18,212	17,722
Valuation allowance	(15,888)	(17,722)
Net deferred tax assets	2,324	0
Intangible amortization	2,324	0
Total deferred tax liabilities	2,324	0
Net deferred tax assets	$ 0	$ 0