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Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments Gain Loss RMB Warrants

	Three months ended September 30,		Nine months ended September 30,
	2014	2013	2014	2013
Gain (loss) in thousands	$ 77	$ 96	$(142)	$ 953

Life (in months)	11	23	11	23
Volatility	62%	57%	62%	57%
Stock price (per share)	$1.20	$0.86	$1.20	$0.86
Risk free interest rate	0.10%	0.30%	0.10%	0.30%