Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-lived Intangible Assets [Roll Forward]
Balance, beginning of year	$ 119,497	$ 119,497	$ 64,187
Balance, beginning of year	(62,377)	(39,871)	(27,821)
Addition from the CUB acquisition	0	0	57,500
Amortization	(18,726)	(22,506)	(14,240)
Fully amortized portion	(1,924)	0	(2,190)
Balance, end of year	117,573	119,497	119,497
Net CDI and CRI, end of year	(79,179)	(62,377)	(39,871)
Net CDI and CRI, end of year	38,394	57,120	79,626
CDI and CRI [Member]
Finite-lived Intangible Assets [Roll Forward]
Fully amortized portion	$ (1,924)	$ 0	$ (2,190)

Finite Lived Intangible Assets Fully Amortized Portion

No definition available.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

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