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Income Taxes and Deferred Tax Asset/Liability - Narrative (Details) - USD ($) | 12 Months Ended | 24 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2018
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax rate change | $ (281,000) | $ 19,545,000 | $ 0 | $ 19,300,000
AMT credit carryforwards | 210,000 |  |  | 210,000
Valuation allowance for deferred tax assets | 31,718,000 | 36,545,000 |  | 31,718,000
Deferred taxes | 1,450,000 | 0 |  | 1,450,000
Accrued income tax penalties and interest | 0 | $ 0 | $ 0 | 0
Domestic Tax Authority |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards | $ 94,000,000 |  |  | 94,000,000
Operating loss carryforward, expiration period | 18 years |  |  |
State and Local Jurisdiction |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards | $ 52,000,000 |  |  | 52,000,000
State and Local Jurisdiction | Minimum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforward, expiration period | 5 years |  |  |
State and Local Jurisdiction | Maximum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforward, expiration period | 20 years |  |  |
Will be Recognized as Reduction of Income Tax Expense |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Unrecognized tax benefits | $ 25,600,000 |  |  | 25,600,000
Will Be Recorded As Increase in Equity |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Unrecognized tax benefits | $ 6,100,000 |  |  | $ 6,100,000

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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31931-109318 + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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