Quarterly report pursuant to Section 13 or 15(d)

Statements of Operations (Parenthetical)

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Statements of Operations (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Income Statement [Abstract]        
Depreciation $ 2,752 $ 1,955 $ 7,512 $ 4,921