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Earning Per Common Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Earnings Per Common Share [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations | $ 7,275 | $ 9,793 | $ 7,257 | $ 4,951 | $ 6,643 | $ 8,463 | [1] | $ (3,321) | [2] | $ 2,979 | $ 29,276 | $ 14,764 | $ 22,067
Income from discontinued operations |  |  | 38 | (24) | 22 | (238) | [1] | 1,250 | [2] | 390 | 14 | 1,424 | 828
Net income | $ 7,275 | $ 9,793 | $ 7,295 | $ 4,927 | $ 6,665 | $ 8,225 | [1] | $ (2,071) | [2] | $ 3,369 | $ 29,290 | $ 16,188 | $ 22,895
Weighted average shares |  |  |  |  |  |  |  |  |  |  | 10,175,000 | 10,124,000 | 10,209,000
Denominator for basic earnings per common share |  |  |  |  |  |  |  |  |  |  | 10,175,000 | 10,124,000 | 10,209,000
Employee stock options |  |  |  |  |  |  |  |  |  |  | 11,000 | 16,000 | 29,000
Other stock compensation plans |  |  |  |  |  |  |  |  |  |  | 74,000 | 94,000 | 74,000
Dilutive potential common shares |  |  |  |  |  |  |  |  |  |  | 85,000 | 110,000 | 103,000
Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversions |  |  |  |  |  |  |  |  |  |  | 10,260,000 | 10,234,000 | 10,312,000
Basic earnings per common share: From continuing operations | $ 0.71 | $ 0.96 | $ 0.71 | $ 0.49 | $ 0.65 | $ 0.83 | [1] | $ (0.33) | [2] | $ 0.30 | $ 2.88 | $ 1.46 | $ 2.16
Basic earnings per common share: From discontinued operations |  |  | $ 0.00 | $ 0.00 | $ 0.00 | $ (0.02) | [1] | $ 0.12 | [2] | $ 0.04 | $ 0.00 | $ 0.14 | $ 0.08
Basic earnings per common share | $ 0.71 | $ 0.96 | $ 0.72 | $ 0.49 | $ 0.66 | $ 0.81 | [1] | $ (0.20) | [2] | $ 0.33 | $ 2.88 | $ 1.60 | $ 2.24
Diluted earnings per common share: From continuing operations | $ 0.71 | $ 0.95 | $ 0.71 | $ 0.48 | $ 0.65 | $ 0.83 | [1] | $ (0.33) | [2] | $ 0.29 | $ 2.85 | $ 1.44 | $ 2.14
Diluted earnings per common share: From discontinued operations |  |  | $ 0.00 | $ 0.00 |  | $ (0.02) | [1] | $ 0.12 | [2] | $ 0.04 | $ 0.00 | $ 0.14 | $ 0.08
Diluted earnings per common share | $ 0.71 | $ 0.95 | $ 0.71 | $ 0.48 | $ 0.65 | $ 0.81 | [1] | $ (0.20) | [2] | $ 0.32 | $ 2.85 | $ 1.58 | $ 2.22
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Common Stock, Dividends, Per Share, Cash Paid | $ 0.03 | $ 0.03 | $ 0.03 | $ 0.03 | $ 0.025 | $ 0.025 | [1] | $ 0.025 | [2] | $ 0.025 | $ 0.12 | $ 0.10 | $ 0.10
[1] | Includes a pre-tax loss of approximately $315 from the Company’s sale of Precise.
[2] | Includes a pre-tax gain of approximately $3,508 from the Company’s sale of SSD.

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- Definition This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e2646-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 + Details
Name: | us-gaap_WeightedAverageNumberOfSharesIssuedBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
Name: | us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration