|
Stock-Based Compensation (Narrative) (Details) (USD $)
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12 Months Ended |
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Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
| Statutory Federal tax rate |
35.00% |
35.00% |
34.00% |
| Total unrecognized compensation cost |
$ 456,000 |
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| Cost expected to be recognized, weighted average period, years |
1 year |
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|
| Stock Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
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| Expiration period |
10 years |
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| Employee Stock Purchase Plan [Member] |
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|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Stock purchase price as a percentage of fair market value |
85.00% |
|
|
| Treasury stock shares reissued |
940 |
4,174 |
|
| Shares of stock issued |
6,770 |
4,246 |
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| Employee Stock Bonus Plan (ESBP) [Member] |
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|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
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| Shares of stock issued |
0 |
0 |
0 |
| Minimum [Member] | Stock Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
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| Vesting period |
6 months |
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| Minimum [Member] | Restricted Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
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| Vesting period |
2 years |
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| Percentage of shares vesting |
50.00% |
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| Maximum [Member] | Restricted Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting period |
3 years |
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