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Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Carrying balance at acquisition date	$ 802,048	$ 409,073	$ 398,785
County Bank Corp ("County") [Member]
Loans acquired - contractual payments	395,123
Nonaccretable difference	2,928
Expected cash flows	392,195
Accretable yield	1,841
Carrying balance at acquisition date	390,354
Acquired Impaired [Member] | County Bank Corp ("County") [Member]
Loans acquired - contractual payments	7,729
Nonaccretable difference	2,928
Expected cash flows	4,801
Accretable yield	185
Carrying balance at acquisition date	4,616
Acquired Non-Impaired [Member] | County Bank Corp ("County") [Member]
Loans acquired - contractual payments	387,394
Expected cash flows	387,394
Accretable yield	1,656
Carrying balance at acquisition date	$ 385,738

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- Definition

Represenst amount related to loans acquired contractual payments.

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- Definition

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

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