This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References+ Details

The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 17

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 17

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 18

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

+ Details

Available-For-Sale Investments - Additional Information (Detail)	12 Months Ended					1 Months Ended	12 Months Ended			1 Months Ended
	Dec. 31, 2009 CNY	Dec. 31, 2011 Five One Network Development Co Ltd Series C Preferred Stock USD ($)	Dec. 31, 2011 Five One Network Development Co Ltd Series C Preferred Stock CNY	Dec. 31, 2010 Five One Network Development Co Ltd Series C Preferred Stock CNY	Jul. 01, 2008 Five One Network Development Co Ltd Series C Preferred Stock	Sep. 13, 2009 Mobile Embedded Technology Inc Series A Preferred Stock	Dec. 31, 2011 Mobile Embedded Technology Inc Series A Preferred Stock USD ($)	Dec. 31, 2011 Mobile Embedded Technology Inc Series A Preferred Stock CNY	Dec. 31, 2010 Mobile Embedded Technology Inc Series A Preferred Stock CNY	Sep. 13, 2009 Mobile Embedded Technology Inc Series A Preferred Stock Cash Consideration USD ($)	Sep. 13, 2009 Mobile Embedded Technology Inc Series A Preferred Stock Cash Consideration CNY
Purchase of redeemable convertible shares					18,508,208	5,000,000
Promissory Note		$ 5,000,000	34,312,761
Cash consideration paid for the redemption of Preferred Shares		45,809,524	314,370,245
Investment in subsidiary		53,376,501	335,946,356	374,838,369			8,087,952	50,904,762	48,464,292
Unrealized gains(loss) in fair value of investments		(3,319,196)	(20,890,689)	(14,467,019)			777,440	4,893,132	(73,032)
Accumulated unrealized holding gains(loss)		2,967,000	18,672,000	39,563,000			3,288,000	20,693,000	15,800,000
Payment for available-for-sale investments	34,157,500									$ 5,000,000	34,157,500