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Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Gain Loss RMB Warrants

	Three months ended June 30,		Six months ended June 30,
	2014	2013	2014	2013
Gain (loss) in thousands	$ 41	$ 758	$(219)	$ 857

Life (in months)	14	26	14	26
Volatility	53%	62%	53%	62%
Stock price (per share)	$1.32	$0.90	$1.32	$0.90
Risk free interest rate	0.36%	0.36%	0.36%	0.36%