Restructuring costs - Activity Related to the Restructuring Liabilities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	$ 841	$ 0
Restructuring costs	4,412	1,671	0
Cash payments	(1,674)	(830)
Other	1,290
Restructuring reserve, period ending	4,869	841	0
Severance and Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	617	0
Restructuring costs	2,454	1,447
Cash payments	(945)	(830)
Other	0
Restructuring reserve, period ending	2,126	617
Facility Exit Costs and Asset Impairment
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	224	0
Restructuring costs	1,958	224
Cash payments	(729)	0
Other	1,290
Restructuring reserve, period ending	$ 2,743	$ 224