Net income per share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Net income applicable to common stockholders:
Income from continuing operations	$ 9	$ 2,221
Income from discontinued operations	0	480
Net income	$ 9	$ 2,701
Basic:
Weighted average common shares used in computing basic net income per share (in shares)	38,811	41,312
Diluted:
Weighted average common shares used in computing basic net income per share (in shares)	38,811	41,312
Stock options	1,205	1,663
Restricted stock and restricted stock units	199	0
Weighted average common shares used in computing diluted net income per share (in shares)	40,215	42,975
Basic income per share:
Income from continuing operations, net of tax (in dollars per share)	$ 0.00	$ 0.06
Income from discontinued operations, net of tax (in dollars per share)	$ 0.00	$ 0.01
Net income (in dollars per share)	$ 0.00	$ 0.07
Diluted income per share:
Income from continuing operations, net of tax (in dollars per share)	$ 0.00	$ 0.05
Income from discontinued operations, net of tax (in dollars per share)	$ 0.00	$ 0.01
Net income (in dollars per share)	$ 0.00	$ 0.06
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,322	4,829
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	4,587	4,829
Restricted common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	27	0
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	708	0