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Fair Value Measurements (Narrative) (Details) (USD $)
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Jun. 30, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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|---|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Investments in Affiliates | $ 14,711,000 | $ 14,581,000 | |
| Cost Method Investment, Ownership Percentage | 10.00% | ||
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Investment in IPXI [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Investments in Affiliates | 3,118,000 | 3,118,000 | 2,500,000 |
| Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 600,000 |