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Employee Benefit Plans (Stock Options Outstanding And Exercisable) (Details) $ / shares in Units, $ in Thousands | 3 Months Ended
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Mar. 31, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
No. of Options Outstanding (in shares) | shares | 119,363
Aggregate Intrinsic Value (in thousands) | $ | $ 989
No. of Options Currently Exercisable (in shares) | shares | 35,750
Aggregate Intrinsic Value of Options Currently Exercisable (in thousands) | $ | $ 464
25.00 - 29.99 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
No. of Options Outstanding (in shares) | shares | 1,250
Weighted-Average Exercise Price (in dollars per share) | $ 28.15
Weighted-Average Remaining Contractual Life (Years) | 3 years
Aggregate Intrinsic Value (in thousands) | $ | $ 24
No. of Options Currently Exercisable (in shares) | shares | 1,250
Weighted-Average Exercise Price of Options Currently Exercisable (in dollars per share) | $ 28.15
Weighted-Average Remaining Contractual Life (Years) | 3 years
Aggregate Intrinsic Value of Options Currently Exercisable (in thousands) | $ | $ 24
25.00 - 29.99 | Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 25.00
25.00 - 29.99 | Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 29.99
30.00 - 34.99 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
No. of Options Outstanding (in shares) | shares | 11,500
Weighted-Average Exercise Price (in dollars per share) | $ 31.38
Weighted-Average Remaining Contractual Life (Years) | 3 years 5 months
Aggregate Intrinsic Value (in thousands) | $ | $ 189
No. of Options Currently Exercisable (in shares) | shares | 11,500
Weighted-Average Exercise Price of Options Currently Exercisable (in dollars per share) | $ 31.38
Weighted-Average Remaining Contractual Life (Years) | 3 years 5 months
Aggregate Intrinsic Value of Options Currently Exercisable (in thousands) | $ | $ 189
30.00 - 34.99 | Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 30
30.00 - 34.99 | Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 34.99
35.00 - 39.99 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
No. of Options Outstanding (in shares) | shares | 48,351
Weighted-Average Exercise Price (in dollars per share) | $ 36.04
Weighted-Average Remaining Contractual Life (Years) | 6 years
Aggregate Intrinsic Value (in thousands) | $ | $ 567
No. of Options Currently Exercisable (in shares) | shares | 16,000
Weighted-Average Exercise Price of Options Currently Exercisable (in dollars per share) | $ 35.09
Weighted-Average Remaining Contractual Life (Years) | 5 years
Aggregate Intrinsic Value of Options Currently Exercisable (in thousands) | $ | $ 203
35.00 - 39.99 | Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 35
35.00 - 39.99 | Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 39.99
40.00 - 44.99 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
No. of Options Outstanding (in shares) | shares | 45,301
Weighted-Average Exercise Price (in dollars per share) | $ 43.51
Weighted-Average Remaining Contractual Life (Years) | 8 years 1 month
Aggregate Intrinsic Value (in thousands) | $ | $ 194
No. of Options Currently Exercisable (in shares) | shares | 7,000
Weighted-Average Exercise Price of Options Currently Exercisable (in dollars per share) | $ 40.88
Weighted-Average Remaining Contractual Life (Years) | 2 years
Aggregate Intrinsic Value of Options Currently Exercisable (in thousands) | $ | $ 48
40.00 - 44.99 | Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 40
40.00 - 44.99 | Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 44.99
45.00 - 50.00 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
No. of Options Outstanding (in shares) | shares | 12,961
Weighted-Average Exercise Price (in dollars per share) | $ 46.61
Weighted-Average Remaining Contractual Life (Years) | 8 years 11 months
Aggregate Intrinsic Value (in thousands) | $ | $ 15
No. of Options Currently Exercisable (in shares) | shares | 0
Weighted-Average Exercise Price of Options Currently Exercisable (in dollars per share) | $ 0.00
Aggregate Intrinsic Value of Options Currently Exercisable (in thousands) | $ | $ 0
45.00 - 50.00 | Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 45
45.00 - 50.00 | Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Ranges Of Exercise Prices (in dollars per share) | $ 50

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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option 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)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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