Restatement (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Effects of restatement on the balance sheets
Accounts receivable	$ 3,469	$ 3,570
Total current assets	8,492	9,058
Property and Equipment, net	86,029	84,676
Total assets	106,978	106,191
Current portion of deferred grant and other revenue	330	111
Total current liabilities	6,132	6,604
Deferred Grant Income and Other Revenue	10,433	10,487
Total liabilities and equity	106,978	106,191
Previously Reported [Member]
Effects of restatement on the balance sheets
Accounts receivable	4,029
Total current assets	9,052
Accounts receivable, less current portion	2,549
Property and Equipment, net	85,344
Total assets	109,402
Current portion of deferred grant and other revenue	890
Total current liabilities	6,692
Deferred Grant Income and Other Revenue	12,297
Total liabilities and equity	109,402
Adjustments [Member]
Effects of restatement on the balance sheets
Accounts receivable	(560)
Total current assets	(560)
Accounts receivable, less current portion	(2,549)
Property and Equipment, net	685
Total assets	(2,424)
Current portion of deferred grant and other revenue	(560)
Total current liabilities	(560)
Deferred Grant Income and Other Revenue	(1,864)
Total liabilities and equity	$ (2,424)