Investments - Additional Disclosures Related to Associated Company Financial Statements (Details) - Multiple equity method investments - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jul. 31, 2019	Jul. 31, 2018
Summary of balance sheet amounts:
Current assets			$ 223,534	$ 213,324
Non-current assets			565,361	518,239
Total assets			788,895	731,563
Current liabilities			268,113	256,850
Non-current liabilities			431,786	386,835
Total liabilities			699,899	643,685
Contingently redeemable preferred stock			35,181	35,186
Equity			53,815	52,692
Total liabilities and equity			$ 788,895	$ 731,563
Summary operating results:
Net revenue	$ 215,452	$ 206,223
Gross profit	45,249	37,543
Net loss	$ (3,557)	$ (11,753)