Balance sheet information - Property and Equipment (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 30,255,000	$ 31,309,000
Less accumulated depreciation and amortization	(21,441,000)	(19,556,000)
Property and equipment, net	8,814,000	11,753,000	15,442,000
Depreciation and amortization expense	4,000,000	5,600,000	6,700,000
Computers and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16,773,000	17,684,000
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,118,000	2,420,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,510,000	2,505,000
Automobiles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	566,000	486,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 8,288,000	$ 8,214,000