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Capital Transactions (Tables) | 6 Months Ended
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Jun. 30, 2015
Capital Transactions |
Summary of repurchases of common shares |
Period |  | Number of Shares |  | Average Price Paid per Share |  | Program Balance Used for Repurchases |
January 1 — June 30, 2015 |  | 275 |  | $ | 13.77 |  | $ | 3,783 |
Schedule of stock option activity |
|  | Number of Shares |  | Weighted Average Exercise Price Per Share |
Options outstanding at December 31, 2014 |  | 2,037 |  | $ | 11.69 |
Granted |  | 310 |  | 14.27 |
Forfeited or cancelled |  | (183 | ) | 14.71 |
Exercised |  | (373 | ) | 9.58 |
Options outstanding at June 30, 2015 |  | 1,791 |  | 12.27 |
Schedule of weighted-average assumptions using Black-Scholes option-pricing model for estimating fair value of each option granted |
|  | 2015 |
Expected life (in years) |  | 5.0 to 6.0 |
Risk-free interest rate |  | 1.5 |
Expected volatility |  | 46.3 to 52.3 |
Dividend yield |  | 2.8 |
Schedule of restricted stock unit activity |
|  | Number of Shares |  | Weighted Average Grant Date Fair Value |
Units outstanding at December 31, 2014 |  | 180 |  | $ | 15.09 |
Granted |  | 593 |  | 12.76 |
Issued |  | (30 | ) | 13.63 |
Forfeited or cancelled |  | (75 | ) | 12.89 |
Units outstanding at June 30, 2015 |  | 668 |  | 12.59 |
Schedule of stock appreciation right activity |
|  | Number of Shares |  | Weighted Average Grant Date Fair Value |
Units outstanding at December 31, 2014 |  | 30 |  | $ | 5.47 |
Granted |  | — |  | — |
Forfeited or cancelled |  | (10 | ) | 5.86 |
Exercised |  | — |  | — |
Units outstanding at June 30, 2015 |  | 20 |  | 5.27 |

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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 stock appreciation rights awards that were outstanding at the beginning and end of the year, and the number of stock appreciation rights awards 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 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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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
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