Deferred income tax benefit expense.

No definition available.

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- Definition

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Current Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6509736

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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-Subparagraph (SAB TOPIC 6.I.7)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section I

-Paragraph Question 1-7

+ Details

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- Definition

Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

+ References

+ Details

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- Definition

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

+ References

+ Details

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- Definition

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

+ References

+ Details

Name:	us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section I

-Subsection 7

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6510177

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

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- Definition

Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

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-Subparagraph (SX 210.4-08.(h))

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

-Publisher FASB

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-Glossary Deferred Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6510177

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

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- Definition

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 6.I.7)

-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section I

-Subsection 7

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6510177

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

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-Topic 740

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

+ Details

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Income Tax (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Current
Federal taxes									$ 18,055us-gaap_CurrentFederalTaxExpenseBenefit	$ 8,673us-gaap_CurrentFederalTaxExpenseBenefit	$ 30,382us-gaap_CurrentFederalTaxExpenseBenefit
State taxes									1,887	2,380	5,019
Foreign taxes									262us-gaap_CurrentForeignTaxExpenseBenefit	252us-gaap_CurrentForeignTaxExpenseBenefit	190us-gaap_CurrentForeignTaxExpenseBenefit
Total current taxes									20,204us-gaap_CurrentIncomeTaxExpenseBenefit	11,305us-gaap_CurrentIncomeTaxExpenseBenefit	35,591us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred
Federal taxes									(9,804)	(2,894)	(8,469)
State taxes									(1,771)	(897)	(742)
Foreign taxes									(297)	(193)	(190)
Total deferred taxes									(11,872)qsii_DeferredIncomeTaxBenefitExpense	(3,984)qsii_DeferredIncomeTaxBenefitExpense	(9,401)qsii_DeferredIncomeTaxBenefitExpense
Provision for income taxes	$ 1,673us-gaap_IncomeTaxExpenseBenefit	$ 1,452us-gaap_IncomeTaxExpenseBenefit	$ 2,552us-gaap_IncomeTaxExpenseBenefit	$ 2,655us-gaap_IncomeTaxExpenseBenefit	$ 2,077us-gaap_IncomeTaxExpenseBenefit	$ (6,606)us-gaap_IncomeTaxExpenseBenefit	$ 5,465us-gaap_IncomeTaxExpenseBenefit	$ 6,385us-gaap_IncomeTaxExpenseBenefit	$ 8,332us-gaap_IncomeTaxExpenseBenefit	$ 7,321us-gaap_IncomeTaxExpenseBenefit	$ 26,190us-gaap_IncomeTaxExpenseBenefit