8. Fair Value Measurements and Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements And Financial Instruments Details
Balance at beginning of period	$ 886
Issuance of convertible promissory notes
Settlement/conversion of convertible promissory notes	(620)
Net gain included in earnings
Balance at end of period	266
The amount of gains included in earnings attributable to liabilities still held at the end of the period