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Stock And Stock Options (Tables) | 12 Months Ended
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Dec. 31, 2017
Stock And Stock Options [Abstract] |
Schedule Of Stock Option Activity |
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﻿ |  | 2017 |  | 2016 |  | 2015
﻿ |  |  |  | Weighted |  |  |  | Weighted |  |  |  | Weighted
﻿ |  |  |  | Average |  |  |  | Average |  |  |  | Average
﻿ |  |  |  | Exercise |  |  |  | Exercise |  |  |  | Exercise
﻿ |  | Shares |  | Price |  | Shares |  | Price |  | Shares |  | Price
﻿Outstanding, beginning of year |  | 37,500 |  | $ | 4.70 |  | 45,625 |  | $ | 6.10 |  | 90,025 |  | $ | 5.70
﻿Granted |  | — |  | $ | — |  | 2,500 |  | $ | 1.20 |  | 10,000 |  | $ | 2.40
﻿Exercised |  | — |  | $ | — |  | — |  | $ | — |  | — |  | $ | —
﻿Expired/cancelled |  | (7,500) |  | $ | 8.40 |  | (10,625) |  | $ | 9.88 |  | (54,400) |  | $ | 4.80
﻿Outstanding, end of year |  | 30,000 |  | $ | 3.73 |  | 37,500 |  | $ | 4.70 |  | 45,625 |  | $ | 6.10
﻿Exercisable, end of year |  | 30,000 |  | $ | 3.73 |  | 37,500 |  | $ | 4.70 |  | 45,625 |  | $ | 6.10
﻿
Schedule Of Stock Options Outstanding And Exercisable |
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﻿Weighted Average Exercise Price |  | Options Outstanding (shares) |  | Weighted Average Remaining Contractual Life (years) |  | Options Exercisable (shares)
﻿$ | 6.40 |  | 1,875 |  | — |  | 1,875
﻿$ | 6.20 |  | 1,875 |  | 0.3 |  | 1,875
﻿$ | 4.80 |  | 1,875 |  | 0.5 |  | 1,875
﻿$ | 4.10 |  | 1,875 |  | 0.8 |  | 1,875
﻿$ | 4.10 |  | 2,500 |  | 1.0 |  | 2,500
﻿$ | 4.80 |  | 2,500 |  | 1.2 |  | 2,500
﻿$ | 4.40 |  | 2,500 |  | 1.5 |  | 2,500
﻿$ | 4.40 |  | 2,500 |  | 1.8 |  | 2,500
﻿$ | 2.50 |  | 2,500 |  | 2.0 |  | 2,500
﻿$ | 2.30 |  | 2,500 |  | 2.2 |  | 2,500
﻿$ | 2.70 |  | 2,500 |  | 2.5 |  | 2,500
﻿$ | 2.20 |  | 2,500 |  | 2.8 |  | 2,500
﻿$ | 1.20 |  | 2,500 |  | 3.0 |  | 2,500
﻿ |  |  | 30,000 |  |  |  | 30,000
﻿

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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