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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, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Earnings Per Common Share [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations | $ 6,038 us-gaap_IncomeLossFromContinuingOperations | $ 9,119 us-gaap_IncomeLossFromContinuingOperations | $ 6,848 us-gaap_IncomeLossFromContinuingOperations | $ 3,649 us-gaap_IncomeLossFromContinuingOperations | $ 7,275 us-gaap_IncomeLossFromContinuingOperations | $ 9,793 us-gaap_IncomeLossFromContinuingOperations | $ 7,257 us-gaap_IncomeLossFromContinuingOperations | $ 4,951 us-gaap_IncomeLossFromContinuingOperations | $ 25,654 us-gaap_IncomeLossFromContinuingOperations | $ 29,276 us-gaap_IncomeLossFromContinuingOperations | $ 14,764 us-gaap_IncomeLossFromContinuingOperations
Income from discontinued operations | (9)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (3)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 14 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 38 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (24)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 2 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 14 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 1,424 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Net income | $ 6,029 us-gaap_NetIncomeLoss | $ 9,116 us-gaap_NetIncomeLoss | $ 6,862 us-gaap_NetIncomeLoss | $ 3,649 us-gaap_NetIncomeLoss | $ 7,275 us-gaap_NetIncomeLoss | $ 9,793 us-gaap_NetIncomeLoss | $ 7,295 us-gaap_NetIncomeLoss | $ 4,927 us-gaap_NetIncomeLoss | $ 25,656 us-gaap_NetIncomeLoss | $ 29,290 us-gaap_NetIncomeLoss | $ 16,188 us-gaap_NetIncomeLoss
Weighted average shares |  |  |  |  |  |  |  |  | 10,225,000 us-gaap_WeightedAverageNumberOfSharesIssuedBasic | 10,175,000 us-gaap_WeightedAverageNumberOfSharesIssuedBasic | 10,124,000 us-gaap_WeightedAverageNumberOfSharesIssuedBasic
Denominator for basic earnings per common share |  |  |  |  |  |  |  |  | 10,225,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 10,175,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 10,124,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Employee stock options |  |  |  |  |  |  |  |  | 6,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 11,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 16,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Other stock compensation plans |  |  |  |  |  |  |  |  | 101,000 us-gaap_IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends | 74,000 us-gaap_IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends | 94,000 us-gaap_IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends
Dilutive potential common shares |  |  |  |  |  |  |  |  | 107,000 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | 85,000 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | 110,000 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversions |  |  |  |  |  |  |  |  | 10,332,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 10,260,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 10,234,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic earnings per common share: From continuing operations | $ 0.59 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.89 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.67 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.36 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.71 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.96 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.71 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.49 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 2.51 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 2.88 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 1.46 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Basic earnings per common share: From discontinued operations | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.14 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
Basic earnings per common share | $ 0.59 us-gaap_EarningsPerShareBasic | $ 0.89 us-gaap_EarningsPerShareBasic | $ 0.67 us-gaap_EarningsPerShareBasic | $ 0.36 us-gaap_EarningsPerShareBasic | $ 0.71 us-gaap_EarningsPerShareBasic | $ 0.96 us-gaap_EarningsPerShareBasic | $ 0.72 us-gaap_EarningsPerShareBasic | $ 0.49 us-gaap_EarningsPerShareBasic | $ 2.51 us-gaap_EarningsPerShareBasic | $ 2.88 us-gaap_EarningsPerShareBasic | $ 1.60 us-gaap_EarningsPerShareBasic
Diluted earnings per common share: From continuing operations | $ 0.58 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.88 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.66 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.35 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.71 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.95 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.71 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.48 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 2.48 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 2.85 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 1.44 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Diluted earnings per common share: From discontinued operations | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.14 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
Diluted earnings per common share | $ 0.58 us-gaap_EarningsPerShareDiluted | $ 0.88 us-gaap_EarningsPerShareDiluted | $ 0.67 us-gaap_EarningsPerShareDiluted | $ 0.35 us-gaap_EarningsPerShareDiluted | $ 0.71 us-gaap_EarningsPerShareDiluted | $ 0.95 us-gaap_EarningsPerShareDiluted | $ 0.71 us-gaap_EarningsPerShareDiluted | $ 0.48 us-gaap_EarningsPerShareDiluted | $ 2.48 us-gaap_EarningsPerShareDiluted | $ 2.85 us-gaap_EarningsPerShareDiluted | $ 1.58 us-gaap_EarningsPerShareDiluted
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  |  |  |  |  |  |  | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Common Stock, Dividends, Per Share, Cash Paid | $ 0.04 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.03 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.03 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.03 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.03 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.03 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.03 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.03 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.13 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.12 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.10 us-gaap_CommonStockDividendsPerShareCashPaid

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- Definition Nonvested equity-based payment awards that contain forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) that result in incremental common shares. + 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 (c) -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 68B -URI http://asc.fasb.org/extlink&oid=7655603&loc=SL5498026-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1500-109256 + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + 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 28A -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1500-109256 + Details
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 + Details
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + 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 + Details
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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
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