Organization, Business Environment, Basis of Presentation and Significant Accounting Policies - Schedule of Impact of New Accounting Pronouncements (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets		$ 31,329
Lease liability		(44,488)
Cumulative effect of adopting ASU 2016-02		16	$ 82,043
Property, Plant and Equipment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset	$ 66,231	66,231
Reclassification of existing balances, right-of-use assets	(21,438)
Right-of-use assets	44,793
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of existing balances, right-of-use assets	(977)
Prepaid expenses (rent)			977
Other Liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred rent credit			(5,498)
Reclassification of existing balances, liability for lease abandonments and deferred rent	5,498
Lease liability	66,247
Lease liability	(65,270)
Reclassification of existing balances, lease liability	977
Liabilities Related to Discontinued Operations
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred rent credit			$ (15,940)
Reclassification of existing balances, liability for lease abandonments	15,940
Retained Earnings (Accumulated Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of adopting ASU 2016-02	16	$ 16		$ (284)
U.S.
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	30,400
India
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	13,600
Equipment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 700