Securities (Summary of Volume of State and Political Subdivision Securities Held in Portfolio) (Details) $ in Thousands	Jun. 30, 2020 USD ($)
CALIFORNIA
Marketable Securities [Line Items]
Debt Securities, Available-for-sale and Held-to-maturity	$ 32,464
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Gain, before Tax	1,811
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Loss, before Tax	48
Debt Securities, Available for Sale and Held to Maturity, Fair Value	34,227
TEXAS
Marketable Securities [Line Items]
Debt Securities, Available-for-sale and Held-to-maturity	28,261
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Gain, before Tax	1,099
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Loss, before Tax	0
Debt Securities, Available for Sale and Held to Maturity, Fair Value	29,360
FLORIDA
Marketable Securities [Line Items]
Debt Securities, Available-for-sale and Held-to-maturity	16,289
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Gain, before Tax	692
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Loss, before Tax	4
Debt Securities, Available for Sale and Held to Maturity, Fair Value	16,977
MICHIGAN
Marketable Securities [Line Items]
Debt Securities, Available-for-sale and Held-to-maturity	15,117
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Gain, before Tax	842
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Loss, before Tax	0
Debt Securities, Available for Sale and Held to Maturity, Fair Value	15,959
NEW YORK
Marketable Securities [Line Items]
Debt Securities, Available-for-sale and Held-to-maturity	13,332
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Gain, before Tax	922
Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Loss, before Tax	0
Debt Securities, Available for Sale and Held to Maturity, Fair Value	$ 14,254

Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Gain, before Tax

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Debt Securities, Available for Sale and Held to Maturity, Accumulated Gross Unrealized Loss, before Tax

+ References

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Debt Securities, Available for Sale and Held to Maturity, Fair Value

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- Definition

Amount of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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