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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2015
Stock-Based Compensation [Abstract] |
Summary of the status of the Company's grants of restricted shares of Class B common stock |
|  | Number of Non- vested Shares (in thousands) |  | Weighted- Average Grant Date Fair Value
Non-vested shares at December 31, 2014 |  | 73 |  |  | $ | 9.83
Granted |  | 38 |  |  |  | 9.95
Vested |  | (57 | ) |  |  | 8.18
Forfeited |  | (2 | ) |  |  | 10.01
NON-VESTED SHARES AT DECEMBER 31, 2015 |  | 52 |  |  | $ | 11.72
Equity compensation plans, Valuation assumptions |
|  | Year ended December 31,
|  | 2015 |  | 2013
ASSUMPTIONS |  |  |  |  |  |
Average risk-free interest rate |  | 0.93 | % |  | 2.07 | %
Expected dividend yield |  | — |  |  | — |
Expected volatility |  | 61.0 | % |  | 65.6 | %
Expected term |  | 5.5 years |  |  | 6.5 years |
Summary of stock option activity |
|  | Number of Options (in thousands) |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2014 |  | 438 |  |  | $ | 6.85 |  | 6.3 |  | $ | —
Granted |  | 6 |  |  |  | 0.01 |  |  |  |  |
Exercised |  | (25 | ) |  |  | 6.85 |  |  |  |  |
Cancelled / Forfeited |  | (5 | ) |  |  | 6.85 |  |  |  |  |
OUTSTANDING AT DECEMBER 31, 2015 |  | 414 |  |  | $ | 6.74 |  | 5.6 |  | $ | 1,825
EXERCISABLE AT DECEMBER 31, 2015 |  | 268 |  |  | $ | 6.80 |  | 5.4 |  | $ | 1,167

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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