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Business and Summary of Significant Accounting Policies - Changes in Marketable Securities (Details) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Accounting Policies [Abstract] |  |
Gross cash proceeds | $ 1,664 | $ 2,035
Cost | 136 | 98
Gross gain on sale included in earnings during the period | 1,528 | 1,937
Deferred taxes on gross gain on sale included in earnings | (571) | (722)
Reclassification adjustment to unrealized gain in other comprehensive income for net gains included in earnings | (957) | (1,215)
Gross unrealized holding loss arising during the period included in other comprehensive loss. | (1,603) | (7,488)
Deferred taxes on unrealized holdings loss included in other comprehensive loss | 597 | 2,794
Net unrealized holding gain (loss) | (1,006) | (4,694)
Other comprehensive income (loss) from marketable equity Securities | $ (1,963) | $ (5,909)

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