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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	Mar. 15, 2017	Jan. 31, 2017	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Dividend declared aggregate amount			$ 7,312		$ 7,274	$ 7,183
Options granted			116,455	[1]	89,907
Restricted Share Units [Member]
Subsequent Event [Line Items]
Restricted Share Units, granted					8,000	74,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividend declaration date	Mar. 15, 2017
Dividend declared aggregate amount	$ 7,400
Dividend declared per share	$ 1.00
Dividend, date payable	Apr. 05, 2017
Dividend payable, date of record	Mar. 27, 2017
Subsequent Event [Member] | Global Share Incentive Plan (2013) [Member]
Subsequent Event [Line Items]
Options granted		119,925
Subsequent Event [Member] | Global Share Incentive Plan (2013) [Member] | Restricted Share Units [Member]
Subsequent Event [Line Items]
Restricted Share Units, granted		78,000
[1] In 2016 the Company granted in the aggregate, 116,455 options. Regarding the grant of 93,660 options, see Note 11E. Regarding the grant of 22,795 options, see Note 3B.

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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Date the declared dividend will be paid, in CCYY-MM-DD format.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 50
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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