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17. Selected Quarterly Financial Information (Unaudited) (amounts in thousands, except per share data) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011
Selected Quarterly Financial Information Amounts In Thousands Except Per Share Data Details |  |  |  |  |  |  |  |  |  |
Total revenue | $ 5,933,000 | $ 6,050,000 | $ 6,015,000 | $ 6,066,000 | $ 6,104,000 | $ 5,872,000 | $ 5,893,000 | $ 6,001,000 | $ 24,064,000 | $ 23,870,000
Operating (loss) income | 479,000 | 99,000 | (643,000) | (997,000) | (908,000) | (795,000) | (1,053,000) | (520,000) | (1,062,000) | (3,276,000)
(Loss) income before income taxes | 520,000 | 76,000 | (645,000) | (1,029,000) | (924,000) | (800,000) | (984,000) | (548,000) | (1,078,000) | (3,256,000)
Net (loss) income | $ 629,000 | $ 54,000 | $ (633,000) | $ (1,045,000) | $ (1,039,000) | $ (837,000) | $ (984,000) | $ (559,000) | $ (995,000) | $ (3,419,000)
Net (loss) income per common share - basic | $ 0.01 | $ 0 | $ (0.01) | $ (0.02) |  |  |  |  | $ (0.01) |
Net (loss) income per common share - diluted | $ 0.01 | $ 0 | $ (0.01) | $ (0.02) | $ (0.02) | $ (0.01) | $ (0.02) | $ (0.01) | $ (0.01) | $ (0.06)
Weighted average shares outstanding - basic | 70,594 | 70,876 | 70,506 | 64,519 |  |  |  |  | 69,040 |
Weighted average shares outstanding - diluted | 71,338 | 71,373 | 70,506 | 64,519 | 60,424 | 60,404 | 60,388 | 60,372 | 69,040 | 60,402

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