Goodwill And Other Intangible Assets Schedule of Amortization Expense (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Core Deposits [Member]
Schedule of Amortization of Intangibles [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 1,471
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,368
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,265
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,162
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,060
Customer-Related Intangible Assets [Member]
Schedule of Amortization of Intangibles [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	200
Finite-Lived Intangible Assets, Amortization Expense, Year Two	200
Finite-Lived Intangible Assets, Amortization Expense, Year Three	200
Finite-Lived Intangible Assets, Amortization Expense, Year Four	200
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 100

[Line Items] for Schedule of Amortization of Intangibles [Table]

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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