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1. Nature of Activities and Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Numerator:        
Net income (loss) $ 2,722 $ (9,593) $ 10,409 $ (19,406)
Shares (Denominator):        
Weighted average shares outstanding-basic 20,284 18,964 20,146 18,596
Weighted average dilutive share equivalents from preferred shares 238 0 238 0
Weighted average dilutive share equivalents from stock options 232 0 134 0
Weighted average dilutive share equivalents from common warrants 194 0 781 0
Weighted average shares outstanding-diluted 20,948 18,964 21,299 18,596
Earnings (loss) per share-basic $ 0.13 $ (0.51) $ 0.52 $ (1.04)
Earnings (loss) per share-diluted $ 0.13 $ (0.51) $ 0.49 $ (1.04)