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1. Summary of Significant Accounting Policies (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Net Earnings Available to Common Shareholders |  |  |
Basic earnings | $ 9,388 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ 6,035 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ 4,783 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Effect of dilutive securities: Stock options | 0 us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits | 0 us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits | 0 us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits
Diluted earnings | $ 9,388 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ 6,035 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ 4,783 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Common Shares |  |  |
Basic earnings per common share (in shares) | 5,615,666 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 5,613,495 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 5,559,401 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of dilutive securities: Stock options (in shares) | 26,326 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 9,725 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 3,206 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Diluted earnings per common share (in shares) | 5,641,992 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 5,623,220 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 5,562,607 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Per Share Amount |  |  |
Basic earnings per common share (in dollars per share) | $ 1.67 us-gaap_EarningsPerShareBasic | $ 1.08 us-gaap_EarningsPerShareBasic | $ 0.86 us-gaap_EarningsPerShareBasic
Diluted earnings per common share (in dollars per share) | $ 1.66 us-gaap_EarningsPerShareDiluted | $ 1.07 us-gaap_EarningsPerShareDiluted | $ 0.86 us-gaap_EarningsPerShareDiluted

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- Definition Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs). + 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 The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting 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 -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 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 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 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.23) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
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- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 + Details
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