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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 4,975 | $ 45,696 | $ 92,401 | $ (13,323) | $ (181) | $ 129,568
Net income |  |  | 20,310 |  |  | 20,310
Cash dividends |  |  | (5,448) |  |  | (5,448)
Purchase of 14,520 shares |  |  |  | (467) |  | (467)
Other comprehensive income (loss): |  |  |  |  |  |
Net unrealized loss on securities available for sale, net of tax |  |  |  |  | (2,149) | (2,149)
FASB ASC 715 adjustment, net of tax |  |  |  |  | (918) | (918)
Issuance of common shares pursuant to stock-based compensation plan, net |  | (349) |  | 108 |  | (241)
Exercise of stock options and SARs |  | (166) |  | 133 |  | (33)
Stock-based compensation expense |  | 1,472 |  |  |  | 1,472
Balance at Dec. 31, 2010 | 4,975 | 46,653 | 107,263 | (13,549) | (3,248) | 142,094
Net income |  |  | 23,009 |  |  | 23,009
Cash dividends |  |  | (6,279) |  |  | (6,279)
Stock dividend | 470 | 33,643 | (34,140) |  |  | (27)
Other comprehensive income (loss): |  |  |  |  |  |
Net unrealized loss on securities available for sale, net of tax |  |  |  |  | 7,268 | 7,268
Reclassification adjustments for gains included in net income, net of tax |  |  |  |  | (28) | (28)
FASB ASC 715 adjustment, net of tax |  |  |  |  | (6,713) | (6,713)
Issuance of common shares pursuant to stock-based compensation plan, net |  | (519) |  | 436 |  | (83)
Exercise of stock options and SARs |  | (196) |  | 145 |  | (51)
Stock-based compensation expense |  | 1,390 |  |  |  | 1,390
Foreign currency translation |  |  |  |  | (32) | (32)
Balance at Dec. 31, 2011 | 5,445 | 80,971 | 89,853 | (12,968) | (2,753) | 160,548
Net income |  |  | 23,303 |  |  | 23,303
Cash dividends |  |  | (7,361) |  |  | (7,361)
Stock dividend | 521 | 44,280 | (44,843) |  |  | (42)
Other comprehensive income (loss): |  |  |  |  |  |
Net unrealized loss on securities available for sale, net of tax |  |  |  |  | 1,756 | 1,756
Reclassification adjustments for gains included in net income, net of tax |  |  |  |  | (1,712) | (1,712)
FASB ASC 715 adjustment, net of tax |  |  |  |  | (3,384) | (3,384)
Issuance of common shares pursuant to stock-based compensation plan, net |  | (310) |  | 392 |  | 82
Exercise of stock options and SARs |  | (1,254) |  | 680 |  | (574)
Stock-based compensation expense |  | 1,399 |  |  |  | 1,399
Balance at Dec. 31, 2012 | $ 5,966 | $ 125,086 | $ 60,952 | $ (11,896) | $ (6,093) | $ 174,015

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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section B -Paragraph 11A -Chapter 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
Name: | us-gaap_StockRepurchasedDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration