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Income Taxes - Textual (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax [Line Items] |  |  |  |  |
Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Deferred Tax Asset, Income Tax Expense (Benefit) |  |  |  | $ 26,674,000 |
Income tax expense (benefit) |  |  | $ 31,603,000 | (168,064,000) | $ (9,404,000)
Income (loss) before income taxes, equity in non-consolidated affiliates and noncontrolling interest |  |  | (80,407,000) | 87,078,000 | (49,716,000)
Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit) |  |  | $ 0 | $ 100,472,000 | $ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | 21.00% | 35.00% | 35.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount |  |  | $ 10,091,000 | $ (220,000) | $ 1,848,000
Non-deductible stock-based compensation |  |  | 1,512,000 | 1,441,000 | 1,123,000
Change to valuation allowance |  |  | 49,482,000 | (103,212,000) | 6,605,000
Impact of tax reform |  |  | (152,000) | (2,939,000) | (353,000)
Income taxes receivable | $ 4,388,000 | $ 4,582,000 | 4,388,000 | 4,582,000 |
Taxes payable | 10,045,000 | 3,810,000 | 10,045,000 | 3,810,000 |
Deferred Tax Assets, Valuation Allowance | 68,479,000 | 19,032,000 | 68,479,000 | $ 19,032,000 |
Operating loss carryforwards expiration period |  |  |  | 2017 through 2032 |
Indefinite loss carryforwards | 122,830,000 |  | 122,830,000 |  |
Valuation allowance, deferred tax asset, increase (decrease), amount | (49,447,000) | (226,466,000) |  |  |
Unrecognized tax benefits | 973,000 | 1,556,000 | 973,000 | $ 1,556,000 |
Unrecognized tax benefits, income tax penalties and interest accrued | 87,000 | $ 123,000 | 87,000 | 123,000 |
United States Federal [Member] |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Operating loss carryforwards | 68,325,000 |  | 68,325,000 |  |
United States |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Indefinite loss carryforwards | 33,572,000 |  | 33,572,000 |  |
Foreign Tax Authority |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Income (loss) before income taxes, equity in non-consolidated affiliates and noncontrolling interest |  |  | (11,709,000) | $ 39,025,000 | $ (33,055,000)
Operating loss carryforwards | 153,021,000 |  | 153,021,000 |  |
Canada |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Indefinite loss carryforwards | 89,258,000 |  | 89,258,000 |  |
State and Local Jurisdiction [Member] |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Operating loss carryforwards | 118,575,000 |  | 118,575,000 |  |
Canada Revenue Agency [Member] |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Change to valuation allowance |  |  | 49,447,000 |  |
Valuation allowance, deferred tax asset, increase (decrease), amount |  |  | (49,447,000) |  |
Minimum |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Decrease in Unrecognized Tax Benefits is Reasonably Possible | 400,000 |  | 400,000 |  |
Maximum |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Decrease in Unrecognized Tax Benefits is Reasonably Possible | $ 500,000 |  | $ 500,000 |  |

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