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Investments (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016 | Dec. 31, 2008 | Aug. 31, 2007
Unrealized gain (loss) on investment under fair value method |  |  | $ 24,800 | $ 1,100 |  |  |
Gain (Loss) on Disposition of Assets |  |  | 307 | 0 |  |  |
kaleo |  |  |  |  |  |  |
Kaleo 2016 Q1 gain on contract termination excluded from other expenses | $ 0 | $ 58 | $ 0 | 18,075 |  |  |
Total cash invested in private company |  |  |  |  |  | $ 7,500 |
Ownership interest percentage |  |  | 20.00% |  |  |  |
Carrying value | 45,000 |  | $ 45,000 |  | $ 20,200 |  |
Unrealized gain (loss) on investment under fair value method | $ 21,500 | $ 300 | $ 24,800 | $ 1,100 |  |  |
Weighted average cost of capital |  |  | 45.00% |  | 45.00% |  |
Basis point decrease of weighted average cost of capital assumption | 5.00% |  | 5.00% |  |  |  |
Basis point increase of weighted average cost of capital assumption | 5.00% |  | 5.00% |  |  |  |
Increase in fair value from five hundred point decrease in weighted average cost of capital assumption | $ 9,000 |  | $ 9,000 |  |  |  |
Decrease in fair value from five hundred point increase in weighted average cost of capital assumption | 8,000 |  | 8,000 |  |  |  |
Harbinger Fund |  |  |  |  |  |  |
Cost Method Investments | 1,700 |  | 1,700 |  | $ 1,700 |  |
Alleghany and Bath County, Virginia [Member] |  |  |  |  |  |  |
Cost Method Investments | $ 1,600 |  | $ 1,600 |  | $ 1,600 |  |

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