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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Current assets: |  |
Allowance for uncollectible accounts | $ 5,971 | $ 2,234
Shareholders' equity: |  |
Common stock, par value |  |
Common stock, shares authorized | 240,000,000 | 240,000,000
Common stock, shares issued | 105,531,000 | 105,640,000

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