Condensed Consolidated Statements Of Operations And Comprehensive Income (Parenthetical)		12 Months Ended	3 Months Ended	6 Months Ended
Dec. 31, 2010	Dec. 31, 2010 Scenario, Previously Reported	Jun. 30, 2010 Scenario, Actual	Jun. 30, 2010 Scenario, Actual
Stock split ratio		2.29	2.26	2.26
Shares of common stock from all of the Company's pre-IPO common stockholders	407,692

This item represents the conversion ratio used in the calculation of a stock split.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Stock Split
-URI http://asc.fasb.org/extlink&oid=6525746

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770

Name:	us-gaap_StockholdersEquityNoteStockSplitConversionRatio
Namespace Prefix:	us-gaap
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration