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Available-for-sale securities (Details 2) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Available-for-sale securities [Abstract]
Cost	$ 11,345	$ 11,185	$ 10,864
Gross Unrealized Gains	155	156	248
Gross Unrealized Losses	24	14	0
Fair Value	11,476	11,327	11,112
Mortgage-backed securities
Available-for-sale securities [Abstract]
Cost	8,709	9,799	9,691
Gross Unrealized Gains	155	156	236
Gross Unrealized Losses	10	9	0
Fair Value	8,854	9,946	9,927
U.S. Treasury securities
Available-for-sale securities [Abstract]
Cost	2,636	1,386	1,173
Gross Unrealized Gains	0	0	12
Gross Unrealized Losses	14	5	0
Fair Value	$ 2,622	$ 1,381	$ 1,185

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

+ Details

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

No definition available.

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

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