Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
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-Name Accounting Standards Codification
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-SubTopic 10
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03(1)(a))
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Name:	us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Restricted Cash (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	$ 1,049	$ 3,030	$ 3,030
Reserve required by local Goverment	208,300	211,600
OIB [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	305	305
Oriental Overseas [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	325	325
Derivatives [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	0	1,980
Obligations Under Agreement of Loans Sold with Recourse [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	$ 1,049	$ 1,050