Discontinued Operations (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Discontinued Operations
Non-cash impairment charge	$ 42,400,000
Assets
Cash and cash equivalents	2,303,000	3,167,000	5,245,000
Total current assets	15,150,000	14,901,000
Total non-current assets	18,010,000	60,274,000
Liabilities
Total current liabilities	7,587,000	6,550,000
Non-current liabilities	281,000	207,000
Legend subsidiary
Discontinued Operations
Non-cash impairment charge	42,400,000
Excess working capital retained	7,700,000
Period under agreement for earnout provision	2 years
Capital loss on sale	48,300,000
Assets
Cash and cash equivalents	2,303,000	3,167,000
Cash and cash equivalents - restricted	401,000	13,000
Investment securities	1,352,000	1,235,000
Receivables	10,345,000	9,871,000
Prepaid expenses and other current assets	749,000	615,000
Total current assets	15,150,000	14,901,000
Property and equipment, net	992,000	885,000
Goodwill	16,868,000	59,241,000
Other non-current assets	150,000	148,000
Total non-current assets	18,010,000	60,274,000
Total assets	33,160,000	75,175,000
Liabilities
Accounts payable	464,000
Accrued Compensation	6,243,000	5,812,000
Other current liabilities	880,000	738,000
Total current liabilities	7,587,000	6,550,000
Non-current liabilities	281,000	207,000
Total liabilities	7,868,000	6,757,000
Assets less liabilities	25,292,000	68,418,000
Revenues	74,033,000	72,644,000	66,619,000
Income (loss) before provision for income taxes	$ (40,518,000)	$ 5,810,000	$ 6,123,000