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Income Taxes (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Taxes [Line Items] |  |  |
Operating loss carryforwards, federal | $ 147,770,000 |  |
Operating loss carryforwards, state | 32,821,000 |  |
Deferred tax assets, valuation allowance | 102,627,000 | $ 75,179,000 |
Federal NOL annual utilization limit | 14,100,000 |  |
Net operating losses, unrecognized excess tax benefits, federal | 1,928,000 |  |
Net operating losses, unrecognized excess tax benefits, state | 37,771,000 |  |
Capital loss carryovers | 3,423,000 |  |
Deferred Tax Asset, Operating and Capital Loss Carryforwards and Credits | 83,323,000 | 71,494,000 |
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation | 1,319,000 | 1,917,000 | $ 2,713,000
Foreign tax credits, additional paid in capital benefit | 52,224,000 |  |
Foreign tax credits utilized for financial statement purposes | $ 20,313,000 |  |
Tax Benefit From Reversal of the Net Deferred Tax Liability |  | $ 1,735,000 |
Effective Income Tax Rate Reconciliation, Percent | 50.00% | 3.00% | 6.00%
Effective tax rate excluding valuation allowance | (28.00%) | (33.00%) |
Unrecognized tax benefits | $ 1,355,000 | $ 2,127,000 |
unrecognized tax benefits primarily associated with state taxes | 85,000 |  |
Domestic Tax Authority [Member] |  |  |
Income Taxes [Line Items] |  |  |
Net operating losses included in deferred tax assets | 0 |  |
State and Local Jurisdiction [Member] |  |  |
Income Taxes [Line Items] |  |  |
Net operating losses included in deferred tax assets | 441,000 |  |
Capital Loss Carryforward Related to Business Acquisition [Member] | Internal Revenue Service (IRS) [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating Loss Carryforwards | $ 29,318,000 |  |

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