| Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
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December 31,
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2013
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2012
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Deferred tax assets:
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Net operating losses
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$
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56,294
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$
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50,502
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Fixed asset basis difference
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6,559
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7,141
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Contributions carryover
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2
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2
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Deferred compensation
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2,354
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2,367
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Accrued liabilities
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63
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29
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Total deferred tax assets
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65,272
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60,041
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Valuation allowance for deferred tax assets
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(65,272
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)
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(60,041
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)
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Net deferred tax asset
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$
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-
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$
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-
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| Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
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Year Ended December 31,
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2013
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2012
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2011
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Expected federal income tax benefit at 34%
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$
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(7,698
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)
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$
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(6,614
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)
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$
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(5,720
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)
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Loss with no tax benefit provided
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7,108
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5,535
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4,880
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State income tax
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6
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10
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7
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State tax benefit
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-
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(321
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)
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-
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Stock Options
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-
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-
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(6
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)
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Non-deductible expenses and other
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590
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1,079
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846
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Income tax (benefit) expense
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$
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6
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$
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(311
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)
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$
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7
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