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Capital Transactions (Tables) | 9 Months Ended
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Sep. 30, 2012
Capital Transactions |
Schedule of stock option activity |
|  | Number of Shares |  | Weighted Average Exercise Price Per Share |
Options outstanding at December 31, 2011 |  | 1,374 |  | $ | 9.88 |
Granted |  | 681 |  | 15.11 |
Expired |  | (6 | ) | 8.59 |
Exercised |  | (191 | ) | 10.34 |
Options outstanding at September 30, 2012 |  | 1,858 |  | 11.75 |
Schedule of weighted-average assumptions using Black-Scholes option-pricing model for estimating fair value of each option granted |
|  | 2012 |
Expected life (in years) |  | 4.0 to 6.0 |
Risk-free interest rate |  | 0.3 to 0.9 |
Expected volatility |  | 58.5 to 66.0 |
Dividend yield |  | 0.0 to 1.3 |
Schedule of restricted stock unit activity |
|  | Number of Shares |  | Weighted Average Grant Date Fair Value |
Units outstanding at December 31, 2011 |  | — |  | $ | — |
Granted |  | 18 |  | 12.07 |
Vested |  | — |  | — |
Forfeited |  | — |  | — |
Units outstanding at September 30, 2012 |  | 18 |  | 12.07 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited 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 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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