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Stock Compensation (Narrative) (Details) (USD $) | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Employee Stock Purchase Plan [Member] | Dec. 31, 2013 2011 Executive Incentive Compensation Plan [Member] | Mar. 25, 2011 2011 Executive Incentive Compensation Plan [Member] | Dec. 31, 2013 1992 Stock Plan [Member] | Mar. 31, 2014 Employee Stock Ownership Plan [Member] | Dec. 31, 2013 Employee Stock Ownership Plan [Member] | Dec. 31, 2012 Employee Stock Ownership Plan [Member] | Dec. 31, 2013 Non-Employee Directors [Member] Stock Option Plan For Directors [Member] | Dec. 31, 2011 Non-Employee Directors [Member] Stock Option Plan For Directors [Member] | Dec. 31, 2013 Deferred Stock [Member] | Dec. 31, 2012 Deferred Stock [Member] | Dec. 31, 2011 Deferred Stock [Member] | Dec. 31, 2013 Deferred Stock [Member] Key Employees [Member] 2011 Executive Incentive Compensation Plan [Member] | Dec. 31, 2013 Deferred Stock [Member] Key Executive Employees [Member] 2011 Executive Incentive Compensation Plan [Member] | Dec. 31, 2013 Restricted Stock Units (RSUs) [Member] | Dec. 31, 2012 Restricted Stock Units (RSUs) [Member] | Dec. 31, 2013 Restricted Stock Units (RSUs) [Member] Non-Employee Directors [Member] 2011 Executive Incentive Compensation Plan [Member] item
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of awards authorized |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  | 169,550 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards granted |  |  |  |  |  |  |  |  |  |  |  |  | 222,654 | 105,698 | 105,836 | 202,078 | 11,576 | 31,354 | 25,879 | 30,344
Award expiration period |  |  |  |  | 7 years |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |
Award vesting percentage |  |  |  |  | 25.00% |  |  |  | 30.00% |  |  |  |  |  |  |  |  |  |  |
Minimum percentage of revenue growth required to earn deferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150.00% |  |  |
Number of employees receiving awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7
Value of awards granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40,000
Award vesting period |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |  |  |  | 1 year
Initial award vesting period |  |  |  |  | 1 year |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |
Awards avaliable for grant |  |  |  | 35,587 | 623,250 |  | 84,718 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares automatically granted to each non-employee director |  |  |  |  |  |  |  |  |  |  |  | 3,000 |  |  |  |  |  |  |  |
Unrecognized compensation expense related to stock options | 67,000 | 161,000 | 102,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recognition period for unrecognized compensation expense | 2 years 9 months 18 days |  |  |  |  |  |  |  |  |  |  |  | 1 year 8 months 12 days |  |  |  |  | 4 months 24 days |  |
Aggregate intrinsic value of options outstanding | 183,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intrinsic value of all options exercised | 38,000 | 59,000 | 61,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash proceeds from exercise of stock options | 110,000 | 86,000 | 73,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation expense |  |  |  |  |  |  |  |  |  |  |  |  | 74,000 | 297,000 |  |  |  | 11,000 | 16,000 |
Excess tax benefits from exercise of stock options | 14,000 | 21,000 | 22,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation expense before income taxes | (81,000) | 303,000 | 449,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation expense after income taxes | (53,000) | 197,000 | 292,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of price of common stock at which employees are able to acquire |  |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Requisite service period |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |
Shares of ESOP allocated to accounts of eligible employees |  |  |  |  |  |  |  |  | 558,397 |  |  |  |  |  |  |  |  |  |  |
ESOP contributions |  |  |  |  |  |  |  | $ 362,273 | $ 463,819 | $ 508,198 |  |  |  |  |  |  |  |  |  |
Shares issued under ESOP |  |  |  |  |  |  |  | 32,520 | 44,598 | 36,145 |  |  |  |  |  |  |  |  |  |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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