Discontinued Operations and Held For Sale - Assets and Liabilities Held For Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Total current assets held for sale	$ 0	$ 45,508
Total long-term assets held for sale	0	564,711
Current liabilities:
Total current liabilities held for sale	0	53,870
Total long-term liabilities held for sale	0	95,821
CBR business | Discontinued Operations, Held-for-sale or Disposed of by Sale
Current assets:
Cash	0	29,259
Accounts receivable, net	0	12,042
Inventories (raw materials)	0	2,913
Prepaid and other current assets	0	1,294
Total current assets held for sale	0	45,508
Property, plant and equipment, net	0	18,092
Intangible assets, net	0	328,991
Goodwill	0	216,971
Other long-term assets	0	496
Restricted cash	0	161
Total long-term assets held for sale	0	564,711
Current liabilities:
Accounts payable	0	2,618
Accrued expenses	0	8,758
Deferred revenues, short term	0	42,494
Total current liabilities held for sale	0	53,870
Deferred revenues, long-term	0	24,387
Deferred tax liabilities	0	71,046
Other long-term liabilities	0	388
Total long-term liabilities held for sale	$ 0	$ 95,821