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Stock-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Assumptions to estimate fair value of stock options and SAR's | The following table sets forth the weighted average fair value of stock options and the assumptions used to estimate the fair value of the stock options using the Black-Scholes option valuation model:
| 2013 |  | 2012 |  | 2011
Weighted average fair value of stock options granted | $ | 12.60 |  |  | $ | 15.77 |  |  | $ | 17.85 |
Volatility | 76.74 | % |  | 70.56 | % |  | 72.56 | %
Expected life in years | 5.0 |  |  | 5.5 |  |  | 6.0 |
Risk-free interest rate | 0.84 | % |  | 0.89 | % |  | 2.30 | %
Dividend yield | — |  |  | — |  |  | — |
Summary of stock option and SAR's activity | The following table summarizes stock option and SARs activity for the years ended December 31, 2013, 2012 and 2011:
| Stock Options |  | SARs
| Shares |  | Weighted Average Exercise Price |  | Shares |  | Weighted Average Exercise Price
Outstanding at December 31, 2010 | 330,840 |  |  | $ | 24.60 |  |  | 230,563 |  |  | $ | 13.46 |
Granted | 139,916 |  |  | 27.39 |  |  | — |  |  | — |
Exercised | (129,785 | ) |  | 11.41 |  |  | (119,801 | ) |  | 13.10 |
Canceled/forfeited | (19,364 | ) |  | 40.16 |  |  | (3,123 | ) |  | 14.46 |
Outstanding at December 31, 2011 | 321,607 |  |  | 24.60 |  |  | 107,639 |  |  | 13.46 |
Granted | 151,102 |  |  | 26.97 |  |  | — |  |  | — |
Exercised | (40,173 | ) |  | 11.84 |  |  | (34,385 | ) |  | 12.73 |
Canceled/forfeited | (62,536 | ) |  | 29.22 |  |  | (4,389 | ) |  | 15.40 |
Outstanding at December 31, 2012 | 370,000 |  |  | 30.20 |  |  | 68,865 |  |  | 13.83 |
Granted | 190,452 |  |  | 20.41 |  |  | — |  |  | — |
Exercised | (13,027 | ) |  | 10.77 |  |  | (6,617 | ) |  | 13.14 |
Canceled/forfeited | (131,855 | ) |  | 29.30 |  |  | (12,039 | ) |  | 15.40 |
Outstanding at December 31, 2013 | 415,570 |  |  | $ | 27.36 |  |  | 50,209 |  |  | $ | 14.15 |
Exercise Price Range |
|  | Options Outstanding |  | Options Exercisable
Range of Exercise Price |  | Number Outstanding |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Number Exercisable |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years)
$ 0.00-$10.00 |  | 13,262 |  |  | $ | 10.00 |  |  | 5.09 |  | 13,262 |  |  | $ | 10.00 |  |  | 5.09
$10.00-$20.00 |  | 99,245 |  |  | $ | 17.25 |  |  | 9.21 |  | 3,936 |  |  | $ | 19.01 |  |  | 8.35
$20.00-$30.00 |  | 227,896 |  |  | $ | 26.07 |  |  | 6.61 |  | 99,310 |  |  | $ | 27.29 |  |  | 4.05
$30.00-$40.00 |  | 38,369 |  |  | $ | 39.00 |  |  | 1.25 |  | 37,515 |  |  | $ | 39.09 |  |  | 1.12
$40.00-$50.00 |  | 14,386 |  |  | $ | 48.50 |  |  | 1.34 |  | 14,386 |  |  | $ | 48.50 |  |  | 1.34
$50.00-$60.00 |  | 9,544 |  |  | $ | 51.40 |  |  | 0.91 |  | 9,544 |  |  | $ | 51.40 |  |  | 0.91
$60.00-$70.00 |  | 3,219 |  |  | $ | 66.60 |  |  | 0.02 |  | 3,219 |  |  | $ | 66.60 |  |  | 0.02
$70.00-$80.00 |  | 9,649 |  |  | $ | 70.90 |  |  | 0.14 |  | 9,649 |  |  | $ | 70.90 |  |  | 0.14
|  | 415,570 |  |  | $ | 27.36 |  |  |  |  | 190,821 |  |  | $ | 33.91 |  |  |
Summary of restricted stock and restricted stock units activity | he following table summarizes restricted stock and restricted stock units activity for the years ended December 31, 2013, 2012 and 2011:
| Restricted Stock |  | Restricted Stock Units
| Number of Shares |  | Weighted Average Grant Date Fair Value |  | Number of Units |  | Weighted Average Fair Value
Outstanding at December 31, 2010 | 64,623 |  |  | $ | 11.37 |  |  | 126,416 |  |  | $ | 27.32 |
Granted | 205,463 |  |  | 27.37 |  |  | — |  |  | — |
Vested | (85,323 | ) |  | 19.36 |  |  | (79,014 | ) |  | 27.87 |
Cancelled/Forfeited | (11,254 | ) |  | 26.89 |  |  | (1,884 | ) |  | 25.03 |
Outstanding at December 31, 2011 | 173,509 |  |  | 11.37 |  |  | 45,518 |  |  | 27.32 |
Granted | 230,096 |  |  | 26.40 |  |  | — |  |  | — |
Vested | (95,336 | ) |  | 23.15 |  |  | (31,456 | ) |  | 25.92 |
Cancelled/Forfeited | (68,571 | ) |  | 27.43 |  |  | (2,651 | ) |  | 24.60 |
Outstanding at December 31, 2012 | 239,698 |  |  | 25.38 |  |  | 11,411 |  |  | 24.14 |
Granted | 573,467 |  |  | 15.38 |  |  | — |  |  | — |
Vested | (90,963 | ) |  | 26.83 |  |  | (11,411 | ) |  | 22.74 |
Cancelled/Forfeited | (109,116 | ) |  | 23.30 |  |  | — |  |  | — |
Outstanding at December 31, 2013 | 613,086 |  |  | $ | 16.68 |  |  | — |  |  | $ | — |
Summary of performance shares and performance unit activity | The following table summarizes performance shares and performance units’ activity for the years-ended December 31, 2013, 2012, and 2011:
| Performance Shares |  | Performance Units
| Number of Shares |  | Weighted Average Grant Date Fair Value |  | Number of Units |  | Weighted Average Fair Value
Outstanding at December 31, 2010 | 100,828 |  |  | $ | 16.29 |  |  | 145,023 |  |  | $ | 35.41 |
Granted | 81,489 |  |  | 42.72 |  |  | — |  |  | — |
Vested | (56,830 | ) |  | 23.24 |  |  | (57,948 | ) |  | 24.68 |
Cancelled/Forfeited | (19,558 | ) |  | 48.62 |  |  | (2,536 | ) |  | 25.03 |
Outstanding at December 31, 2011 | 105,929 |  |  | 16.29 |  |  | 84,539 |  |  | 35.41 |
Granted | 145,508 |  |  | 25.78 |  |  | 32,498 |  |  | — |
Vested | (111,703 | ) |  | 7.96 |  |  | (74,845 | ) |  | 31.17 |
Cancelled/Forfeited | (30,575 | ) |  | 42.11 |  |  | (7,953 | ) |  | 49.20 |
Outstanding at December 31, 2012 | 109,159 |  |  | 26.92 |  |  | 34,239 |  |  | 39.78 |
Granted | 173,773 |  |  | 23.35 |  |  | 34,239 |  |  | 38.02 |
Vested | (4,160 | ) |  | 30.97 |  |  | (68,478 | ) |  | 38.02 |
Cancelled/Forfeited | (68,377 | ) |  | 34.49 |  |  | — |  |  | — |
Outstanding at December 31, 2013 | 210,395 |  |  | $ | 28.04 |  |  | — |  |  | $ | — |

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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based 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 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights 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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