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Lease Commitments - Operating and financing leases - (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Lease Commitments
Operating lease, Within 1 year	$ 119	$ 118
Operating lease, After 1 year but within 2 years	110	120
Operating lease, After 2 years but within 3 years	69	98
Operating lease, After 3 years but within 4 years	69	69
Operating lease, After 4 years but within 5 years	69	69
Operating lease, After 5 years	539	589
Total undiscounted cash flows	975	1,063
Discount on cash flows	(177)	(198)
Total lease liabilities	798	865
Financing lease, Within 1 year	316	296
Financing lease, After 1 year but within 2 years	319	275
Financing lease, After 2 years but within 3 years	320	277
Financing lease, After 3 years but within 4 years	253	274
Financing lease, After 4 years but within 5 years	252	236
Financing lease, After 5 years	2,821	3,007
Total undiscounted cash flows	4,281	4,365
Discount on cash flows	(1,120)	(1,202)
Total lease liabilities	$ 3,161	$ 3,163

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Present worth of Future Sums of Money Payable and the same pertains to operating lease.

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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+ References

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+ References

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in third rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

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+ References

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
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