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Long-term Inventories (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Long-term Inventories
Work in progress	$ 666
Finished goods	2,115	28
Long-term inventories	2,781	28
Long-term Inventories
Provision recognized as cost of sales	1,399	3,479	4,034
H1N1 vaccines
Long-term Inventories
The amount of inventory with expired shelf lives		1,099
Provision recognized as cost of sales		$ 1,099	$ 0

X

- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of noncurrent merchandise or goods held by the company.

+ References

No definition available.

+ Details

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Namespace Prefix:	sva_
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Balance Type:	debit
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X

- Details

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Balance Type:	na
Period Type:	duration

X

- Definition

The amount of inventory with expired shelf lives, which is not expected to be converted to cash, sold or exchanged within the normal operating cycle.

+ References

No definition available.

+ Details

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Namespace Prefix:	sva_
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Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of noncurrent merchandise or goods which are partially completed.

+ References

No definition available.

+ Details

Name:	sva_InventoryWorkInProcessNetOfReservesNoncurrent
Namespace Prefix:	sva_
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X

- Details

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X

- Definition

Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(d))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph d

-Article 5

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Namespace Prefix:	us-gaap_
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X

- Definition

Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28360613&loc=d3e4542-108314

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