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STOCKHOLDERS' EQUITY (Details) (USD $) | 12 Months Ended |  | 1 Months Ended |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Restricted stock grants | Dec. 31, 2011 Restricted stock grants | Dec. 31, 2010 Restricted stock grants | Dec. 31, 2012 Restricted stock units | Dec. 31, 2011 Restricted stock units | Dec. 31, 2010 Restricted stock units | Dec. 31, 2012 2012 Incentive Plan | Dec. 31, 2012 2009 Incentive Plan | Dec. 31, 2012 Prior Incentive Plans | Dec. 31, 2012 Pay-for-performance program | Sep. 30, 2010 Pay-for-performance program Restricted stock units | Dec. 31, 2012 Pay-for-performance program Restricted stock units | Dec. 31, 2012 2003 Incentive Plan
Stock Based Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance |  |  |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |
Vesting period |  |  |  | 5 years |  |  |  |  |  |  |  |  |  | 7 years |  |
Number of shares to be vested and issued for each unit outstanding on satisfying performance criteria at June 30, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |
Number of restricted stock units excluded from summary table | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of the activity of the incentive plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted share grants |  |  |  | 109,450 | 74,040 | 875 |  |  |  |  |  |  |  | 200,000 |  |
Average per Unit grant price (in dollars per share) |  |  |  | $ 16.77 | $ 16.19 | $ 14.64 |  |  |  |  |  |  |  | $ 11.74 |  |
Deferred compensation to be recognized over vesting period |  |  |  | $ 1,835,000 | $ 1,199,000 | $ 13,000 |  |  |  |  |  |  |  | $ 824,000 |  |
Non-vested shares: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested beginning of period (in shares) |  |  |  | 348,385 | 320,940 | 357,925 |  |  |  |  |  | 607,460 |  |  |  |
Grants (in shares) |  |  |  | 109,450 | 74,040 | 875 |  |  |  |  |  |  |  | 200,000 |  |
Vested during period (in shares) |  |  |  | (49,325) | (46,450) | (36,050) |  |  |  |  |  |  |  |  |  |
Forfeitures (in shares) |  |  |  | (1,050) | (145) | (1,810) |  |  |  |  |  |  |  |  |  |
Non-vested end of period (in shares) |  |  |  | 407,460 | 348,385 | 320,940 |  |  |  |  |  | 607,460 |  |  |  |
Other disclosures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average per share value of non-vested shares (based on grant price) |  |  |  | $ 12.59 | $ 12.96 | $ 13.33 |  |  |  |  |  |  |  |  |  |
Value of shares vested during the period (based on grant price) |  |  |  | 1,208,000 | 960,000 | 687,000 |  |  |  |  |  |  |  |  |  |
Average value of shares forfeited (based on grant price) (in dollars per share) |  |  |  | $ 13.65 | $ 11.03 | $ 13.62 |  |  |  |  |  |  |  |  |  |
Total charge to operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation charged to operations | 1,223,000 | 1,009,000 | 915,000 | 1,050,000 | 930,000 | 889,000 | 173,000 | 79,000 | 26,000 |  |  |  |  |  |  |
Compensation costs related to nonvested awards that have not yet been recognized | $ 3,272,000 |  |  |  |  |  |  |  |  |  |  |  | $ 545,000 |  |  |
Approximate weighted average vesting period | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock awards granted to date (in shares) |  |  |  |  |  |  |  |  |  |  | 525,810 |  |  |  |  | 273,600

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited 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)(1)(iv)(3) -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)(e) -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 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 number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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 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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