Discontinued Operations (Details) (USD $)	3 Months Ended			12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Legend subsidiary	Dec. 31, 2012 Legend subsidiary	Dec. 31, 2011 Legend subsidiary	Sep. 30, 2012 Legend subsidiary
Discontinued Operations
Non-cash impairment charge	$ 42,400,000				$ 42,400,000
Excess working capital retained					7,700,000
Maximum earnout provision				5,000,000
Period under agreement for earnout provision				2 years
Capital loss on sale				46,200,000
Operational results of Legend presented as discontinued operations
Revenues					74,033,000	72,644,000
Income (loss) before provision for income taxes					(40,518,000)	5,810,000
Assets
Cash and cash equivalents		2,303,000	3,167,000		2,303,000
Cash and cash equivalents - restricted					401,000
Investment securities					1,352,000
Receivables					10,345,000
Prepaid expenses and other current assets					749,000
Total current assets		15,150,000			15,150,000
Property and equipment, net					992,000
Goodwill					16,868,000		59,200,000
Other non-current assets					150,000
Total non-current assets		18,010,000			18,010,000
Total assets					33,160,000
Liabilities
Accounts payable					464,000
Accrued compensation					6,243,000
Other current liabilities					880,000
Total current liabilities		7,587,000			7,587,000
Non-current liabilities		281,000			281,000
Total liabilities					7,868,000
Assets less liabilities					$ 25,292,000