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Stock Based Compensation (Details) (USD $) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock options granted (in shares) | 0 |  | 0 |  |  |
Stock options granted (in dollars per share) | $ 0 |  | $ 0 |  |  |
Stock options outstanding (in shares) | 340,800 | [1] | 446,800 | [2] | 362,800 | 528,800
Outstanding and fully vested stock options (in shares) | 334,800 | [1] | 369,300 | [2] |  |
Weighted average exercise price (in dollars per share) | $ 9.62 | [1] | $ 9.63 | [2] | $ 9.53 | $ 9.82
Compensation expense | $ (18,000) |  | $ 51,000 |  |  |
Total unrecognized compensation cost related to unvested options | 1,000 |  |  |  |  |
Contractual Term With One-third Yearly Vesting [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Contractual term | 6 years |  |  |  |  |
Vesting period | 3 years |  |  |  |  |
Employee Stock Option [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock options outstanding (in shares) | 171,600 |  |  |  |  |
Outstanding and fully vested stock options (in shares) | 171,600 |  |  |  |  |
Weighted average exercise price (in dollars per share) | $ 10.05 |  |  |  |  |
Remaining weighted contractual life | 0 years 4 months 24 days |  |  |  |  |
Compensation expense | (39,000) |  | 33,000 |  |  |
Employee Stock Option [Member] | Contractual Term With One-fifth Yearly Vesting [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Contractual term | 10 years |  |  |  |  |
Vesting period | 5 years |  |  |  |  |
Director Stock Options [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Contractual term | 10 years |  |  |  |  |
Vesting period | 6 months |  |  |  |  |
Stock options outstanding (in shares) | 169,200 |  |  |  |  |
Outstanding and fully vested stock options (in shares) | 163,200 |  |  |  |  |
Weighted average exercise price (in dollars per share) | $ 9.18 |  |  |  |  |
Remaining weighted contractual life | 5 years |  |  |  |  |
Compensation expense | 21,000 |  | 18,000 |  |  |
Non Qualified Stock Option Agreement [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Contractual term | 6 years |  |  |  |  |
Vesting period | 3 years |  |  |  |  |
Stock options granted (in shares) | 60,000 |  |  |  |  |
Stock options granted (in dollars per share) | $ 7.85 |  |  |  |  |
Stock based compensation amount | $ 54,000 |  |  |  |  |
[1] | Options with exercise prices ranging from $2.79 to $14.75
[2] | Options with exercise prices ranging from $5.50 to $14.75

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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 shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option 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)(1)(iii) -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(1)(c), d(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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