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Business and Summary of Significant Account Policies - Changes in Marketable Equity Securities (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Accounting Policies [Abstract] |  |
Gross cash proceeds | $ 839,000 | $ 1,664,000
Cost | 697,000 | 136,000
Gross gain on sale included in earnings during the period | 142,000 | 1,528,000
Deferred taxes on gross gain on sale included in earnings | (58,000) | (571,000)
Reclassification adjustment to unrealized gain in other comprehensive income for net gains included in earnings | (84,000) | (957,000)
Gross unrealized holding loss arising during the period included in other comprehensive loss. | (4,081,000) | (1,603,000)
Deferred taxes on unrealized holdings loss included in other comprehensive loss | 1,582,000 | 597,000
Valuation allowance on deferred taxes on unrealized holding losses included in other comprehensive loss | (871,000) |
Net unrealized holding gain (loss) | (3,370,000) | (1,006,000)
Other comprehensive income (loss) from marketable equity securities | $ (3,454,000) | $ (1,963,000)

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