Employee Benefit Plans (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Employee Benefit Plans (Textual) [Abstract]
Employee benefit plans employer contributions	$ 949	$ 820	$ 889
Maximum percentage of salary deferment	75.00%qsii_MaximumPercentageOfSalaryDeferment
Maximum percentage of annual bonus deferment	100.00%
Deferred compensation liability	5,750	4,809
Net cash surrender value of life insurance policies for deferred compensation	6,004	4,865
Deferral Plan [Member]
Employee Benefit Plans (Textual) [Abstract]
Employee benefit plans employer contributions	$ 86	$ 62	$ 49

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Maximum percentage of annual bonus deferment .

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of salary deferment .

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ 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 210.5-02.17)

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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 4

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765

+ Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

+ References

No definition available.

+ Details

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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