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Acquisitions - Schedule of Acquired Loans Accounted for in Accordance with ASC 310-30 (Detail) - USD ($) $ in Thousands	Mar. 26, 2019	Oct. 17, 2017	Sep. 01, 2017
Salin Bancshares, Inc
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition	$ 22,672
Contractual cash flows not expected to be collected (nonaccretable differences)	6,694
Expected cash flows at acquisition	15,978
Interest component of expected cash flows (accretable discount)	735
Fair value of acquired loans accounted for under ASC 310-30	$ 15,243
Wolverine Bancorp Inc [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition		$ 21,912
Contractual cash flows not expected to be collected (nonaccretable differences)		1,832
Expected cash flows at acquisition		20,080
Interest component of expected cash flows (accretable discount)		2,267
Fair value of acquired loans accounted for under ASC 310-30		$ 17,813
Lafayette Community Bancorp [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition			$ 6,128
Contractual cash flows not expected to be collected (nonaccretable differences)			1,326
Expected cash flows at acquisition			4,802
Interest component of expected cash flows (accretable discount)			933
Fair value of acquired loans accounted for under ASC 310-30			$ 3,869

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Certain loans acquired in transfer not accounted for as debt securities acquired during period interest component of expected cash flows.

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Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
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