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Stock-Based Compensation (Narrative) (Details) (USD $) | 3 Months Ended | 6 Months Ended | 0 Months Ended |  | 3 Months Ended | 6 Months Ended | 0 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | May 22, 2013 Director Compensation Policy [Member] director | Mar. 05, 2012 Director Compensation Policy [Member] | Jun. 30, 2013 ESPP | Jun. 30, 2012 ESPP | Jun. 30, 2013 ESPP | Jun. 30, 2012 ESPP | May 22, 2013 Restricted Stock [Member] | Apr. 03, 2013 Restricted Stock [Member] | Jun. 30, 2013 Restricted Stock [Member] | Jun. 30, 2012 Restricted Stock [Member] | Jun. 30, 2013 Restricted Stock [Member] | Jun. 30, 2012 Restricted Stock [Member] | May 22, 2013 Stock Options | Jun. 30, 2013 Stock Options | Jun. 30, 2012 Stock Options | Jun. 30, 2013 Stock Options | Jun. 30, 2012 Stock Options | Jun. 30, 2013 Performance Shares [Member] | Jun. 30, 2013 Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation awards, options outstanding at period end (in Shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 814,459 |  | 814,459 |  |  |
Share based compensation awards, options outstanding and unvested at period end (in Shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 644,273 |  | 644,273 |  |  |
Share based compensation award, options granted during period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 562,500 |  |  |  |  |  |
Shares purchased through Employee Stock Purchase Plan (in Shares) |  |  |  |  |  |  | 20,627 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average purchase price of ESPP shares purchased during the period (in Dollars per share) |  |  |  |  |  |  | $ 11.65 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation expense |  |  |  |  |  |  | $ 88,000 | $ 33,000 | $ 187,000 | $ 73,000 |  |  | $ 339,000 | $ 363,000 | $ 652,000 | $ 604,000 |  | $ 131,000 | $ 68,000 | $ 178,000 | $ 125,000 | $ 106,000 | $ 275,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  |  |  |  |  | 3 years | 3 years |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value |  |  |  |  |  |  |  |  |  |  |  | $ 800,000 |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  |  |  |  | 38,200 |  |  |  |  |  |  |  |  |  |  |
Share based compensation awards, vesting percentage per period (in Percent) |  |  |  |  |  |  |  |  |  |  | 33.33% |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized share based compensation |  |  |  |  |  |  |  |  |  |  |  |  | 2,600,000 |  | 2,600,000 |  |  |  |  |  |  |  |
Unrecognized share based compensation, expected term (in Duration) |  |  | 1 year 9 months 18 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance award hurdle price (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21.50 | $ 21.50
Number of days market price must exceed limit to vest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 days
Term when market price must exceed limit to vest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days
Performance award purchase price option 1 (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.50
Performance award purchase price option 2 (in Dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9
Directors fees approved under new Directors Compensation Policy, audit committee chair |  |  |  |  |  | 17,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Directors fees approved under new Directors Compensation Policy, compensation and corporate governance chair |  |  |  |  |  | 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Directors fees approved under new Directors Compensation Policy, lead director |  |  |  |  |  | 115,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Directors fees approved under new Directors Compensation Policy, each independent director |  |  |  |  |  | 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Directors fees approved under new Directors Compensation Policy, each independent director per regular or scheduled meeting |  |  |  |  |  | 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Directors fees approved under new Directors Compensation Policy, other committee members and chairs |  |  |  |  |  | 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Directors fees approved under new Directors Compensation Policy |  |  |  |  |  | 1,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued to directors |  |  |  |  | 18,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of independent directors |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Directors compensation expense | $ 476,000 | $ 455,000 | $ 609,000 | $ 616,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,300,000 |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph 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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + 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 grant-date intrinsic value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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