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SECURITIES - Held to Maturity Investment Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Amortized Cost, Held to maturity:
Within one year	$ 1,669
One to five years	28,229
Five to ten years	14,959
Beyond ten years	66,450
Total	111,307	$ 133,638
Estimated Fair Value, Held to maturity:
Within one year	1,681
One to five years	29,329
Five to ten years	15,739
Beyond ten years	68,996
Estimated Fair Value	115,745	135,027
State and municipal obligations
Amortized Cost, Held to maturity:
Total	26,926	41,008
Estimated Fair Value, Held to maturity:
Estimated Fair Value	28,217	41,817
U.S. GSE residential mortgage-backed securities
Amortized Cost, Held to maturity:
Total	7,251	8,142
Estimated Fair Value, Held to maturity:
Estimated Fair Value	7,451	8,093
U.S. GSE residential collateralized mortgage obligations
Amortized Cost, Held to maturity:
Total	33,800	39,936
Estimated Fair Value, Held to maturity:
Estimated Fair Value	35,086	40,498
U.S. GSE commercial mortgage-backed securities
Amortized Cost, Held to maturity:
Total	16,871	17,215
Estimated Fair Value, Held to maturity:
Estimated Fair Value	17,575	17,235
U.S. GSE commercial collateralized mortgage obligations
Amortized Cost, Held to maturity:
Total	26,459	27,337
Estimated Fair Value, Held to maturity:
Estimated Fair Value	$ 27,416	$ 27,384

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- Definition

Amount of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
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-Paragraph 5
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