Discontinued Operations and Held For Sale - Assets and Liabilities Held For Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Total current assets held for sale	$ 77,161	$ 45,508
Total long-term assets held for sale	559,300	564,711
Current liabilities:
Total current liabilities held for sale	52,962	53,870
Total long-term liabilities held for sale	98,285	95,821
CBR business | Discontinued Operations, Held-for-sale or Disposed of by Sale
Current assets:
Cash	59,554	29,259
Accounts receivable, net	10,558	12,042
Prepaid transaction costs	3,865	0
Inventories (raw materials)	2,268	2,913
Prepaid and other current assets	916	1,294
Total current assets held for sale	77,161	45,508
Property, plant and equipment, net	18,256	18,092
Intangible assets, net	321,841	328,991
Goodwill	216,971	216,971
Other long-term assets	2,071	496
Restricted cash	161	161
Total long-term assets held for sale	559,300	564,711
Current liabilities:
Accounts payable	1,260	2,618
Accrued expenses	7,498	8,758
Deferred revenues, short term	44,204	42,494
Total current liabilities held for sale	52,962	53,870
Deferred revenues, long-term	29,823	24,387
Deferred tax liabilities	67,664	71,046
Other long-term liabilities	798	388
Total long-term liabilities held for sale	$ 98,285	$ 95,821