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The cash outflow to reacquire common stock during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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Amount of stock repurchase plan authorized.

+ References

No definition available.

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Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the par value method.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Stock repurchase program (Details) (USD $)	9 Months Ended
Stock repurchase program (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Stockholders Equity Note [Line Items]
Payments for repurchase of common stock	$ 2,519,000	$ 7,899,000
Stock repurchase program announced on March 18, 2013
Stockholders Equity Note [Line Items]
Payments for repurchase of common stock	2,500,000
Average purchase price (in usd per share)	$ 7.17
Common Stock \| Stock repurchase program announced on March 18, 2013
Stockholders Equity Note [Line Items]
Authorized amount for stock repurchases			10,000,000
Common stock repurchased (in shares)	351,549
Remaining authorized amount of stock repurchases	7,500,000
Additional Paid-in Capital \| Stock repurchase program announced on March 18, 2013
Stockholders Equity Note [Line Items]
Treasury stock retired during period	1,100,000
Retained Earnings \| Stock repurchase program announced on March 18, 2013
Stockholders Equity Note [Line Items]
Treasury stock retired during period	$ 1,400,000