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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2018
Share-based Compensation [Abstract] |
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] | A summary of stock-based compensation costs follows (in millions):
| Year Ended December 31,
| 2018 |  | 2017
Total stock-based compensation costs: |  |  |
Restricted stock units | $ | 0.1 |  |  | $ | 0.1 |
Stock options | 0.3 |  |  | 0.4 |
Expense included in selling, general and administrative expense | $ | 0.4 |  |  | $ | 0.5 |
Total recognized tax benefit | $ | — |  |  | $ | — |
Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of stock option activity follows:
|  | Stock Options (thousands) |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life in Years |  | Aggregate Intrinsic Value (millions)
Outstanding at December 31, 2017 |  | 425 |  | $4.14 |  | 7.3 |  | $0.1
Outstanding at December 31, 2018 |  | 425 |  | $4.14 |  | 6.3 |  | $—
Exercisable at December 31, 2018 |  | 345 |  | $4.11 |  | 6.3 |  | $—
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] | Stock options outstanding and options exercisable at December 31, 2018, follow:
Stock Exercise Price |  | Options Outstanding (thousands) |  | Remaining Contractual Life in Years |  | Options Exercisable (thousands)
$5.62 |  | 22 |  | 5.9 |  | 22
$4.37 |  | 300 |  | 6.2 |  | 225
$3.90 |  | 23 |  | 6.6 |  | 23
$3.93 |  | 15 |  | 6.6 |  | 15
$2.71 |  | 50 |  | 6.8 |  | 50
$2.68 |  | 15 |  | 7.4 |  | 10

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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