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Acquisitions and Dispositions - Dispositions (Details) $ in Thousands		1 Months Ended	3 Months Ended	6 Months Ended
	Apr. 12, 2016 USD ($)	Jul. 31, 2017 USD ($)	Jun. 30, 2016 USD ($) item	Jun. 30, 2016 USD ($) item
Dispositions
Gain on sale of business				$ 39,149
Cracked \| Sold
Dispositions
Total consideration received	$ 39,000
Restricted cash in escrow to secure post-closing indemnification	3,900
Amount of escrow released		$ 3,900
Revenue			$ 200	1,800
Pre-tax loss			$ 1,000	$ 1,900
Net assets sold	600
Transaction costs incurred during sale	300
Certain non-core online properties \| Sold
Dispositions
Number of properties sold \| item			1	1
Total consideration received			$ 1,000	$ 1,000
Other income, net \| Cracked \| Sold
Dispositions
Gain on sale of business	$ 38,100
Other income, net \| Certain non-core online properties \| Sold
Dispositions
Gain on sale of business				$ 1,000