Income Taxes (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Taxes [Abstract]
Statutary tax rate			39.00%	39.00%
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 73		$ 73		$ 229
Deferred Tax Assets, Net	126,041		126,041		124,200
OtherComprehensiveIncomeLossTax	(223)				(983)
Income Tax Expense (Benefit)	560	$ 3,627	13,757	$ 15,146
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,200		1,200		2,000
Residual tax effect from OIB's change in applicable tax rate AFS	$ 1	$ 9	103	$ 24
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations			$ 877
Effective tax rate			29.80%	28.80%
International Banking Entity [Member]
OtherComprehensiveIncomeLossTax			$ 5		$ 117

Residual tax effect amount reclassified from accumulated other comprehensive income into income tax provision.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

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-Publisher FASB
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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of interest expense accrued for an underpayment of income taxes.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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