Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 11,342	$ 9,063
Restricted cash	1,695	1,240
Accounts receivable, net	1,599	1,006
Prepaid expenses and other current assets	3,844	2,839
Total current assets	18,480	14,148
Property and equipment, net	26,230	26,568
Project development costs	15,665	11,516
Other assets	108	217
Total assets	60,483	52,449
Current liabilities:
Accounts payable	3,186	2,805
Accrued expenses and other current liabilities	8,102	7,405
Total current liabilities	11,288	10,210
Long-term loan, related party	17,426	17,426
Total liabilities	51,514	27,636
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value, 150,000 shares authorized, 30,023 and 29,931 shares issued and outstanding in 2012 and 2011, respectively	362	300
Additional paid-in capital	157,780	146,083
Accumulated deficit	(149,173)	(128,425)
Total stockholders' equity	8,969	24,813
Total liabilities and stockholders' equity	60,483	52,449
Series A [Member]
Stockholders' equity:
Preferred stock, 5,000 shares authorized; $0.01 par value -	0	0
Series B [Member]
Stockholders' equity:
Preferred stock, 5,000 shares authorized; $0.01 par value -	0	0
Series E [Member]
Current liabilities:
Series E preferred stock payable - at December 31, 2013 is 1,551 Shares	22,800	0
Stockholders' equity:
Preferred stock, 5,000 shares authorized; $0.01 par value -	$ 0	$ 6,855