Available-for-sale securities (Details 2) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Available-for-sale securities [Abstract]
Cost	$ 10,858	$ 10,652	$ 10,748
Gross Unrealized Gains	31	21	4
Gross Unrealized Losses	88	162	224
Fair Value	10,801	10,511	10,528
Mortgage-backed securities
Available-for-sale securities [Abstract]
Cost	10,679	10,473	10,282
Gross Unrealized Gains	31	21	4
Gross Unrealized Losses	88	162	223
Fair Value	10,622	10,332	10,063
U.S. Treasury securities
Available-for-sale securities [Abstract]
Cost	179	179	466
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	0	0	1
Fair Value	$ 179	$ 179	$ 465

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

No definition available.

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- 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=82897076&loc=d3e27161-111563

+ Details

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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.

+ Details

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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.

+ Details

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- Details

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