Other Current Liabilities (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 02, 2018	Dec. 31, 2018	Dec. 01, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Upfront Consideration Liability		$ 70,500
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount		4,925		$ 0
Client deposits		2,980		71
Other		82		666
Total Other Liabilities, Current		$ 85,581		5,159
Forex Limited
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage			74.84%
PML JV
Business Acquisition [Line Items]
Percentage of Membership Interest in Joint Venture by Other Party	10.00%	10.00%
Weizmann
Business Acquisition [Line Items]
Upfront Consideration Liability		$ 63,325		0
Pearl
Business Acquisition [Line Items]
Upfront Consideration Liability		3,384		0
Lawson
Business Acquisition [Line Items]
Upfront Consideration Liability		2,736		0
WDEV
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability, Current		2,367		0
Miles
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability, Current		2,219		0
Via
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability, Current		1,899		4,422
Mercury
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability, Current		720		0
Business Travels
Business Acquisition [Line Items]
Upfront Consideration Liability		720		0
AHA Taxis
Business Acquisition [Line Items]
Upfront Consideration Liability		$ 224		$ 0