Accounts Payable and Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ACCOUNTS PAYABLE AND ACCRUED EXPENSES [Abstract]
Accounts Payable, Current	$ 354	$ 359
Employee-related Liabilities, Current	909	941
Accrued Vacation	693	589
Accrued Legal Expenses - Patent	1,765	2,535
Accrued Professional Fees, Current	1,286	1,786
Accrued Patent Acquisition Related Payments, Current	900	300
Accrued Income Taxes, Current	583	198
Other Accrued Liabilities, Current	135	391
Accounts Payable and Accrued Liabilities, Current	$ 6,625	$ 7,099