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Accumulated Other Comprehensive Income (Loss) (Components of unrealized holding gains on AFS securities) (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Accumulated Other Comprehensive Income (Loss) [Line Items]

Unrealized gains (losses) arising during the period

$ (7,229)

$ 289

$ (5,865)

Reclassification adjustment for net realized (gains) losses included in net income

0

(142)

(245)

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax

0

0

770

Comprehensive income (loss) before income tax (expense) benefit

(7,229)

147

(5,340)

Tax effect

^[1]

1,415

89

1,834

Unrealized gains (losses), net of tax

(5,814)

236

(3,506)

Unrealized Holding Gains (Losses) on AFS Securities [Member]

Accumulated Other Comprehensive Income (Loss) [Line Items]

Unrealized gains (losses) arising during the period

(7,229)

289

(5,865)

Reclassification adjustment for net realized (gains) losses included in net income

0

(142)

(245)

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax

0

0

770

Comprehensive income (loss) before income tax (expense) benefit

(7,229)

147

(5,340)

Tax effect

^[1]

1,415

89

1,834

Unrealized gains (losses), net of tax

(5,814)

236

(3,506)

Unrealized Holding Gains (Losses) on AFS Securities [Member] | Auction Rate Money Market Preferred and Preferred Stocks [Member]

Accumulated Other Comprehensive Income (Loss) [Line Items]

Unrealized gains (losses) arising during the period

(495)

407

54

Reclassification adjustment for net realized (gains) losses included in net income

0

0

0

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax

0

0

0

Comprehensive income (loss) before income tax (expense) benefit

(495)

407

54

Tax effect

0

^[2]

0

^[2]

0

^[1]

Unrealized gains (losses), net of tax

(495)

407

54

Unrealized Holding Gains (Losses) on AFS Securities [Member] | All Other AFS Securities [Member]

Accumulated Other Comprehensive Income (Loss) [Line Items]

Unrealized gains (losses) arising during the period

(6,734)

(118)

(5,919)

Reclassification adjustment for net realized (gains) losses included in net income

0

(142)

(245)

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax

0

0

770

Comprehensive income (loss) before income tax (expense) benefit

(6,734)

(260)

(5,394)

Tax effect

1,415

^[2]

89

^[2]

1,834

^[1]

Unrealized gains (losses), net of tax

$ (5,319)

$ (171)

$ (3,560)

[1]	(1) See “Note 16 – Accumulated Other Comprehensive Income (Loss)” in the accompanying notes to consolidated financial statements for tax effect reconcilia
[2]	Calculations are based on a federal income tax rate of 21% in 2018 and 34% in 2017 and 2016.

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