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Shareholders' Equity (Details) (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares issued of common stock (in shares) | 15,000 |  | 30,000 |
Changes in common stock [Roll Forward] |  |  |  |
Balance |  |  | $ 116,117,000 |
Balance | 110,803,000 |  | 110,803,000 |
Employee Stock Options [Member] |  |  |  |
Options [Roll Forward] |  |  |  |
Outstanding beginning balance (in shares) |  |  | 2,259,282 |
Granted (in shares) |  |  | 0 |
Forfeited (in shares) |  |  | 0 |
Expired (in shares) |  |  | 0 |
Exercised (in shares) |  |  | 0 |
Outstanding ending balance (in shares) | 2,259,282 |  | 2,259,282 |
Exercisable (in shares) | 2,119,282 |  | 2,119,282 |
Weighted Average Exercise Price [Roll Forward] |  |  |  |
Beginning Balance (in dollars per share) |  |  | $ 3.80 |
Granted (in dollars per share) |  |  | $ 0 |
Forfeited (in dollars per share) |  |  | $ 0 |
Expired (in dollars per share) |  |  | $ 0 |
Exercised (in dollars per share) |  |  | $ 0 |
Ending Balance (in dollars per share) | $ 3.80 |  | $ 3.80 |
Exercisable (in dollars per share) | $ 3.90 |  | $ 3.90 |
Weighted Average Remaining Contractual Life - Years |  |  | 3 years 9 months 18 days |
Aggregate intrinsic value of options outstanding | 0 |  | 0 |
Share-based compensation expense | 16,000 | 2,000 | 32,000 | 2,000
Total unrecognized expense for the option plan | 132,000 |  | 132,000 |
Director Stock Options [Member] |  |  |  |
Options [Roll Forward] |  |  |  |
Outstanding beginning balance (in shares) |  |  | 150,000 |
Granted (in shares) |  |  | 0 |
Forfeited (in shares) |  |  | 0 |
Expired (in shares) |  |  | (40,000) |
Exercised (in shares) |  |  | 0 |
Outstanding ending balance (in shares) | 110,000 |  | 110,000 |
Exercisable (in shares) | 53,334 |  | 53,334 |
Weighted Average Exercise Price [Roll Forward] |  |  |  |
Beginning Balance (in dollars per share) |  |  | $ 3.05 |
Granted (in dollars per share) |  |  | $ 0 |
Forfeited (in dollars per share) |  |  | $ 0 |
Expired (in dollars per share) |  |  | $ 2.60 |
Exercised (in dollars per share) |  |  | $ 0 |
Ending Balance (in dollars per share) | $ 3.21 |  | $ 3.21 |
Exercisable (in dollars per share) | $ 3.53 |  | $ 3.53 |
Weighted Average Remaining Contractual Life - Years |  |  | 8 years 1 month 20 days |
Aggregate intrinsic value of options outstanding | 0 |  | 0 |
Share-based compensation expense | 16,000 | 15,000 | 31,000 | 37,000
Total unrecognized expense for the option plan | 81,000 |  | 81,000 |
Common Stock [Member] |  |  |  |
Changes in common stock [Roll Forward] |  |  |  |
Balance |  |  | 277,000 |
Balance (in shares) |  |  | 27,652,602 |
2001 stock compensation plan |  |  | 0 |
2001 stock compensation plan (in shares) |  |  | 30,000 |
Expense of employee options vesting |  |  | 0 |
Expense of outside director options vesting |  |  | 0 |
Balance | 277,000 |  | 277,000 |
Balance (in shares) | 27,682,602 |  | 27,682,602 |
Additional Paid-In Capital [Member] |  |  |  |
Changes in common stock [Roll Forward] |  |  |  |
Balance |  |  | 123,078,000 |
2001 stock compensation plan |  |  | 48,000 |
Expense of employee options vesting |  |  | 32,000 |
Expense of outside director options vesting |  |  | 31,000 |
Balance | $ 123,189,000 |  | $ 123,189,000 |

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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(4) -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)(g) -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 shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock 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)(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(1)(f) -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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