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Condensed Financial Information of Parent (Details) (USD $) In Thousands, unless otherwise specified | 0 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 28, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ 16,570 | $ 14,958 | $ 20,117 | $ 18,683 | $ 16,523 | $ 14,904 | $ 14,192 | $ 12,123 | $ 16,570 | $ 14,958 |  |  |
Investments |  | 475,101 | 434,934 | 490,151 | 464,999 | 437,160 | 454,156 | 443,122 | 454,717 | 475,101 | 434,934 |  |  |
Premises and equipment |  | 23,616 | 22,988 |  |  |  |  |  |  | 23,616 | 22,988 |  |  |
Goodwill |  | 29,805 | 29,805 |  |  |  |  |  |  | 29,805 | 29,805 |  |  |
Other assets |  | 27,616 | 25,904 |  |  |  |  |  |  | 27,616 | 25,904 |  |  |
Total assets |  | 1,463,963 | 1,414,999 | 1,464,749 | 1,444,496 | 1,416,787 | 1,423,316 | 1,424,757 | 1,423,792 | 1,463,963 | 1,414,999 |  |  |
Liabilities and shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other liabilities |  | 14,341 | 16,921 | 13,853 | 13,734 | 16,070 | 17,383 | 17,152 | 16,213 | 14,341 | 16,921 |  |  |
Total liabilities |  | 1,317,865 | 1,258,676 |  |  |  |  |  |  | 1,317,865 | 1,258,676 |  |  |
Shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock |  | 0 | 12,402 |  |  |  |  |  |  | 0 | 12,402 |  |  |
Common stock |  | 106 | 98 |  |  |  |  |  |  | 106 | 98 |  |  |
Additional paid-in capital |  | 58,395 | 46,314 |  |  |  |  |  |  | 58,395 | 46,314 |  |  |
Retained earnings |  | 94,000 | 89,692 |  |  |  |  |  |  | 94,000 | 89,692 |  |  |
Accumulated other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net unrealized gain on available for sale securities, net of tax |  | (6,591) | 7,940 |  |  |  |  |  |  | (6,591) | 7,940 |  |  |
Total shareholders' equity |  | 146,098 | 156,323 | 146,653 | 145,972 | 163,671 | 156,637 | 153,405 | 151,593 | 146,098 | 156,323 | 150,858 | 149,848 |
Total liabilities and shareholders' equity |  | 1,463,963 | 1,414,999 | 1,464,749 | 1,444,496 | 1,416,787 | 1,423,316 | 1,424,757 | 1,423,792 | 1,463,963 | 1,414,999 |  |  |
Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain on sale or call of securities |  |  |  |  |  |  |  |  |  | (1,087) | (1,968) | (3,293) |  |
Income (loss) before income taxes |  | 4,441 | 3,912 | 4,320 | 4,067 | 3,562 | 4,167 | 4,284 | 3,696 | 16,390 | 16,059 | 16,155 |  |
Applicable tax expense |  | 939 | 683 | 955 | 825 | 706 | 944 | 961 | 783 | 3,425 | 3,371 | 3,791 |  |
Equity in earnings of Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 3,502 | 3,229 | 3,365 | 3,242 | 2,856 | 3,223 | 3,323 | 2,913 | 12,965 | 12,688 | 12,364 |  |
Cash flows from operating activities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 3,502 | 3,229 | 3,365 | 3,242 | 2,856 | 3,223 | 3,323 | 2,913 | 12,965 | 12,688 | 12,364 |  |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation |  |  |  |  |  |  |  |  |  | 1,727 | 1,314 | 1,355 |  |
Net gain on sale or call of securities |  |  |  |  |  |  |  |  |  | (1,087) | (1,968) | (3,293) |  |
Equity compensation expense |  |  |  |  |  |  |  |  |  | 214 | 85 | 22 |  |
Net decrease in other assets and accrued interest |  |  |  |  |  |  |  |  |  | 1,557 | 756 | 1,288 |  |
Increase (decrease) in other liabilities |  |  |  |  |  |  |  |  |  | 1,370 | 1,631 | (1,596) |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | 24,984 | 25,023 | 29,725 |  |
Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from maturities, payments, calls of securities available for sale |  |  |  |  |  |  |  |  |  | 55,399 | 61,776 | 42,756 |  |
Capital expenditures |  |  |  |  |  |  |  |  |  | (2,363) | (1,726) | (1,222) |  |
Net cash provided by (used in) investing activities |  |  |  |  |  |  |  |  |  | (75,957) | (19,270) | 16,185 |  |
Cash flows from financing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of preferred stock |  |  |  |  |  |  |  |  |  | (12,500) | 0 | (12,500) |  |
Proceeds from sale of common stock | 11,649 |  |  |  |  |  |  |  |  | 11,973 | 499 | 431 |  |
Dividends paid |  |  |  |  |  |  |  |  |  | (8,657) | (8,310) | (8,751) |  |
Net cash used in financing activities |  |  |  |  |  |  |  |  |  | 52,585 | (4,910) | (45,633) |  |
Net increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  |  | 1,612 | 843 | 277 |  |
Cash and cash equivalents at beginning of year |  |  |  |  |  | 14,115 |  |  |  | 14,958 | 14,115 |  |  | 13,838
Cash and cash equivalents at end of year |  | 16,570 | 14,958 |  |  |  |  |  |  | 16,570 | 14,958 | 14,115 |  | 13,838
Parent Company |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 1,113 | 2,685 |  |  |  |  |  |  | 1,113 | 2,685 |  |  |
Dividends receivable |  | 1,500 | 1,900 |  |  |  |  |  |  | 1,500 | 1,900 |  |  |
Investments |  | 543 | 429 |  |  |  |  |  |  | 543 | 429 |  |  |
Investment in subsidiary |  | 117,391 | 125,580 |  |  |  |  |  |  | 117,391 | 125,580 |  |  |
Premises and equipment |  | 32 | 43 |  |  |  |  |  |  | 32 | 43 |  |  |
Goodwill |  | 27,559 | 27,559 |  |  |  |  |  |  | 27,559 | 27,559 |  |  |
Other assets |  | 203 | 72 |  |  |  |  |  |  | 203 | 72 |  |  |
Total assets |  | 148,341 | 158,268 |  |  |  |  |  |  | 148,341 | 158,268 |  |  |
Liabilities and shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends payable |  | 2,134 | 1,923 |  |  |  |  |  |  | 2,134 | 1,923 |  |  |
Other liabilities |  | 109 | 22 |  |  |  |  |  |  | 109 | 22 |  |  |
Total liabilities |  | 2,243 | 1,945 |  |  |  |  |  |  | 2,243 | 1,945 |  |  |
Shareholders' equity |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock |  | 0 | 12,402 |  |  |  |  |  |  | 0 | 12,402 |  |  |
Common stock |  | 106 | 98 |  |  |  |  |  |  | 106 | 98 |  |  |
Additional paid-in capital |  | 58,395 | 46,314 |  |  |  |  |  |  | 58,395 | 46,314 |  |  |
Retained earnings |  | 87,523 | 97,509 |  |  |  |  |  |  | 87,523 | 97,509 |  |  |
Accumulated other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net unrealized gain on available for sale securities, net of tax |  | 74 | 0 |  |  |  |  |  |  | 74 | 0 |  |  |
Total accumulated other comprehensive income |  | 74 | 0 |  |  |  |  |  |  | 74 | 0 |  |  |
Total shareholders' equity |  | 146,098 | 156,323 |  |  |  |  |  |  | 146,098 | 156,323 |  |  |
Total liabilities and shareholders' equity |  | 148,341 | 158,268 |  |  |  |  |  |  | 148,341 | 158,268 |  |  |
Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest and dividends on investments |  |  |  |  |  |  |  |  |  | 10 | 10 | 10 |  |
Net gain on sale or call of securities |  |  |  |  |  |  |  |  |  | 0 | 0 | (153) |  |
Total income |  |  |  |  |  |  |  |  |  | 10 | 10 | 163 |  |
Occupancy expense |  |  |  |  |  |  |  |  |  | 11 | 8 | 4 |  |
Other operating expense |  |  |  |  |  |  |  |  |  | 362 | 218 | 137 |  |
Total expense |  |  |  |  |  |  |  |  |  | 373 | 226 | 141 |  |
Income (loss) before income taxes |  |  |  |  |  |  |  |  |  | (363) | (216) | 22 |  |
Applicable tax expense |  |  |  |  |  |  |  |  |  | (128) | (76) | 15 |  |
Income (loss) before Bank earnings |  |  |  |  |  |  |  |  |  | (235) | (140) | 7 |  |
Equity in earnings of Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remitted |  |  |  |  |  |  |  |  |  | 7,096 | 9,694 | 8,710 |  |
Unremitted |  |  |  |  |  |  |  |  |  | (6,104) | (3,134) | (3,647) |  |
Net income |  |  |  |  |  |  |  |  |  | 12,965 | 12,688 | 12,364 |  |
Cash flows from operating activities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 12,965 | 12,688 | 12,364 |  |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation |  |  |  |  |  |  |  |  |  | 11 | 8 | 13 |  |
Net gain on sale or call of securities |  |  |  |  |  |  |  |  |  | 0 | 0 | (153) |  |
Equity compensation expense |  |  |  |  |  |  |  |  |  | 214 | 85 | 22 |  |
Net decrease in other assets and accrued interest |  |  |  |  |  |  |  |  |  | (132) | (15) | (42) |  |
Decrease in dividend receivable |  |  |  |  |  |  |  |  |  | 400 | 0 | 0 |  |
Increase (decrease) in other liabilities |  |  |  |  |  |  |  |  |  | 258 | (5) | 44 |  |
Unremitted |  |  |  |  |  |  |  |  |  | (6,104) | (3,134) | (3,647) |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | 7,612 | 9,627 | 8,601 |  |
Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from maturities, payments, calls of securities available for sale |  |  |  |  |  |  |  |  |  | 0 | 0 | 12,773 |  |
Purchases of investments |  |  |  |  |  |  |  |  |  | 0 | 0 | (273) |  |
Capital expenditures |  |  |  |  |  |  |  |  |  | 0 | (25) | (29) |  |
Net cash provided by (used in) investing activities |  |  |  |  |  |  |  |  |  | 0 | (25) | 12,471 |  |
Cash flows from financing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of preferred stock |  |  |  |  |  |  |  |  |  | (12,500) | 0 | (12,500) |  |
Proceeds from sale of common stock |  |  |  |  |  |  |  |  |  | 11,973 | 499 | 431 |  |
Dividends paid |  |  |  |  |  |  |  |  |  | (8,657) | (8,310) | (8,751) |  |
Net cash used in financing activities |  |  |  |  |  |  |  |  |  | (9,184) | (7,811) | (20,820) |  |
Net increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  |  | (1,572) | 1,791 | 252 |  |
Cash and cash equivalents at beginning of year |  |  |  |  |  | 894 |  |  |  | 2,685 | 894 |  |  | 642
Cash and cash equivalents at end of year |  | $ 1,113 | $ 2,685 |  |  |  |  |  |  | $ 1,113 | $ 2,685 | $ 894 |  | $ 642

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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