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Stock Based Compensation (Details) (USD $) | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended |  | 0 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 Restricted stock grants | Sep. 30, 2012 Restricted stock grants | Sep. 30, 2013 Restricted stock grants | Sep. 30, 2012 Restricted stock grants | Sep. 30, 2013 Restricted stock units | Sep. 30, 2012 Restricted stock units | Sep. 30, 2013 Restricted stock units | Sep. 30, 2012 Restricted stock units | Sep. 30, 2013 2012 Incentive Plan | Sep. 30, 2013 Prior Incentive Plans | Sep. 30, 2013 Pay-for-performance program | Sep. 14, 2010 Pay-for-performance program Restricted stock units | Sep. 30, 2013 Pay-for-performance program Restricted stock units
Stock Based Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 |  |  |  |
Shares issued pursuant to plan |  |  |  |  |  |  |  |  |  |  |  |  | 112,650 |  |  |  |
Vesting period |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Number of share instruments vested since plan's inception |  |  |  |  |  |  |  |  |  |  |  |  | 50 |  |  |  |
Number of shares to be vested and issued for each unit outstanding on satisfying performance criteria at June 30, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1
Number of shares to be issued for each unit outstanding on not satisfying performance criteria at June 30, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Outstanding options at the end of the period (in shares) | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of the activity of the incentive plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted share grants |  |  |  |  |  |  | 112,650 | 109,450 |  |  |  |  |  |  |  | 200,000 |
Average per share grant price (in dollars per share) |  |  |  |  |  |  | $ 21.59 | $ 16.77 |  |  |  |  |  |  |  |  |
Deferred compensation to be recognized over vesting period |  |  |  |  |  |  | $ 2,432,000 | $ 1,835,000 |  |  |  |  |  |  |  |  |
Non-vested shares: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested beginning of period (in shares) |  |  |  |  | 470,015 | 408,510 | 407,460 | 348,385 |  |  |  |  |  | 557,415 |  |  |
Grants (in shares) |  |  |  |  |  |  | 112,650 | 109,450 |  |  |  |  |  |  |  | 200,000 |
Vested during period (in shares) |  |  |  |  |  |  | (50,095) | (49,325) |  |  |  |  |  |  |  |  | 0
Forfeitures (in shares) |  |  |  |  |  | (1,050) |  | (1,050) |  |  |  |  |  |  |  |  | 0
Non-vested end of period (in shares) |  |  |  |  | 470,015 | 407,460 | 470,015 | 407,460 |  |  |  |  |  | 557,415 |  |  |
Other disclosures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average per share value of non-vested shares (based on grant price) (in dollars per share) |  |  |  |  | $ 14.22 | $ 12.59 | $ 14.22 | $ 12.59 |  |  |  |  |  |  |  |  |
Value of shares vested during the period (based on grant price) |  |  |  |  |  |  | 876,000 | 1,208,000 |  |  |  |  |  |  |  |  |
The total charge to operations for all incentive plans, including the 200,000 Units, is as follows: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation charged to operations | 366,000 | 323,000 | 1,132,000 | 909,000 | 335,000 | 250,000 | 1,037,000 | 792,000 | 31,000 | 73,000 | 95,000 | 117,000 |  |  |  |  |
Compensation costs related to nonvested awards that have not yet been recognized | $ 4,580,000 |  | $ 4,580,000 |  |  |  |  |  |  |  |  |  |  |  | $ 459,000 |  |
Approximate weighted average vesting period |  |  | 2 years 9 months 18 days |  |  |  |  |  |  |  |  |  |  |  |  |  |

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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=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 A240 -Subparagraph b(2)(c) -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 The weighted average fair value at grant date for nonvested equity-based awards issued 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=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 A240 -Subparagraph c(1) -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 b(2)(c) -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 The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or 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)(i)-(ii) -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 A240 -Subparagraph b(2)(b) -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 b(2)(a) -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 The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting 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 (c)(2)(iii)(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 A240 -Subparagraph b(2)(d) -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 The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + 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 (d)(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 A240 -Subparagraph c(2) -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 The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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