v3.10.0.1

Capital Stock and Stock-Based Compensation (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2018 USD ($) $ / shares shares | Mar. 31, 2017 USD ($) $ / shares shares | Sep. 30, 2018 USD ($) $ / shares shares | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) vote $ / shares shares | Sep. 30, 2017 USD ($) $ / shares shares | Dec. 31, 2017 $ / shares shares
Class of Stock [Line Items] |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  |  | 100,000,000 |  | 100,000,000 |  | 100,000,000
Preferred stock, par value (usd per share) | $ / shares |  |  | $ 0.01 |  | $ 0.01 |  | $ 0.01
Common stock, shares authorized (in shares) |  |  | 585,000,000.0 |  | 585,000,000.0 |  | 385,000,000
Preferred stock, shares issued (in shares) |  |  | 0 |  | 0 |  | 0
Preferred stock, shares outstanding (in shares) |  |  | 0 |  | 0 |  | 0
Stock based compensation expense | $ |  |  | $ 0.2 | $ 0.2 | $ 0.8 | $ 0.8 |
Restricted Stock Units |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Restricted stock units vested (in shares) |  |  |  |  | 300,000 | 300,000 |
Market value of restricted stock units | $ |  |  |  |  | $ 0.3 | $ 0.6 |
2007 Long-Term Incentive Plan | Stock Options |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Weighted-average grant date fair value of stock options granted (usd per share) | $ / shares |  |  |  |  | $ 0.35 | $ 0.67 |
Expected volatility rate |  |  |  |  | 48.70% | 50.20% |
Expected life (in years) |  |  |  |  | 5 years | 5 years |
Dividend yield |  |  |  |  | 5.50% | 5.00% |
Risk-free interest rate |  |  |  |  | 2.60% | 2.10% |
Period of historical sata used to calculate expected volatility in year |  |  |  |  | 5 years |  |
2007 Long-Term Incentive Plan | Non Management Directors | Stock Options |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Stock options granted during period (in shares) | 500,000 | 400,000 |  |  |  |  |
Exercise price of stock options granted (usd per share) | $ / shares | $ 1.22 | $ 2.23 |  |  |  |  |
Term of stock options (in years) |  |  |  |  | 10 years |  |
2007 Long-Term Incentive Plan | Officer | Stock Options |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Stock options granted during period (in shares) | 700,000 | 500,000 |  |  |  |  |
Exercise price of stock options granted (usd per share) | $ / shares | $ 1.22 | $ 2.23 |  |  |  |  |
Term of stock options (in years) |  |  |  |  | 10 years |  |
Vesting period (in years) |  |  |  |  | 3 years |  |
2007 Long-Term Incentive Plan | Officers and Certain Subsidiaries Employees | Restricted Stock Units |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 3 years |  |
Common stock, granted (in shares) | 800,000 | 400,000 |  |  |  |  |
Common stock aggregate values, granted | $ | $ 0.9 | $ 0.8 |  |  |  |  |
Conversion basis (in shares) |  |  |  |  | 1 |  |
Class A |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  | 485,000,000 |  | 485,000,000 |  | 285,000,000
Common stock, par value (usd per share) | $ / shares |  |  | $ 0.01 |  | $ 0.01 |  | $ 0.01
Common Stock, voting rights, votes per share owned | vote |  |  |  |  | 1 |  |
Common stock, shares issued (in shares) |  |  | 231,600,000 |  | 231,600,000 |  | 231,200,000
Common stock, shares outstanding (in shares) |  |  | 231,600,000 |  | 231,600,000 |  | 231,200,000
Class A | Restricted Stock Units |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Number of shares issued (in shares) |  |  |  |  | 200,000 | 200,000 |
Class A | 2007 Long-Term Incentive Plan | Non Management Directors |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Shares issued in period (in shares) | 168,029 |  |  |  |  |  |
Stock issued in period, gross | $ | $ 0.2 |  |  |  |  |  |
Class B |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  | 100,000,000 |  | 100,000,000 |  | 100,000,000
Common stock, par value (usd per share) | $ / shares |  |  | $ 0.01 |  | $ 0.01 |  | $ 0.01
Common Stock, voting rights, votes per share owned | vote |  |  |  |  | 5 |  |
Maximum percentage of voting power |  |  |  |  | 49.00% |  |
Common stock, shares issued (in shares) |  |  | 37,000,000 |  | 37,000,000 |  | 37,000,000
Common stock, shares outstanding (in shares) |  |  | 37,000,000 |  | 37,000,000 |  | 37,000,000
General and Administrative Expense | Class A |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Stock based compensation expense | $ |  |  |  |  | $ 0.4 | $ 0.3 |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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Data Type: | na
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