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Schedule II - Valuation and Qualifying Accounts (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Provision For Doubtful Accounts [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] | ||
| Balance at Beginning of Year | $ 15 | $ 35 |
| Charged to Costs and Expense | 15 | |
| Deductions | 7 | 20 |
| Balance at End of Year | 7 | 15 |
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Deferred Tax Assets Valuation [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] | ||
| Balance at Beginning of Year | 43,114 | 41,305 |
| Charged to Costs and Expense | 1,280 | 1,809 |
| Balance at End of Year | $ 44,394 | $ 43,114 |