Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Accumulated depreciation and amortization	$ 5,166	$ 4,240
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	1,495,000	1,495,000
Preferred stock, shares outstanding	1,495,000	1,495,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	63,353,000	62,768,000
Common stock, shares outstanding	63,353,000	62,768,000
Senior Notes [Member] | 10% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of Senior Notes	10.00%	10.00%