Geographic Information (Revenue by Geographic Locations) (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Reportable_Segments	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Reportable_Segments			1
Revenues from External Customers and Long-Lived Assets [Line Items]
Document Period End Date			Jun. 30, 2017
Revenue, Net, Increase (Decrease)	$ 14,813		$ 22,850
External Revenues	87,387	$ 72,574	166,490	$ 143,640
Long-lived assets	729,209	562,537	729,209	562,537	$ 729,209
Increase (Decrease) in Deferred Income Taxes			5,877	6,635
Goodwill, Acquired During Period			117,336			$ 35,787
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues			105,079	103,171
Long-lived assets	391,308	371,507	391,308	371,507	391,308
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net, Increase (Decrease)			1,200
External Revenues			4,142	2,950
Long-lived assets	6,484	6,941	6,484	6,941	6,484
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues			8,218	2,425
Long-lived assets	23,283	7,429	23,283	7,429	23,283
Long Lived Assets, Increase (Decrease)					15,900
Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues			16,516	15,550
Long-lived assets	1,261	627	1,261	627	1,261
Effect of Exchange Rate on Revenue			500
Singapore
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues			3,125	2,957
Long-lived assets	17,441	34,008	17,441	34,008	17,441
Long Lived Assets, Increase (Decrease)					(16,600)
New Zealand
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues			1,023	876
Long-lived assets	257	224	257	224	257
India
Revenues from External Customers and Long-Lived Assets [Line Items]
Increase In Value Of Long Lived Assets From Continued Product Development					3,900
Revenue, Net, Increase (Decrease)			13,700
External Revenues			19,999	6,307
Long-lived assets	213,135	79,524	213,135	79,524	213,135
Long Lived Assets, Increase (Decrease)					133,600
Increase In Value Of Long Lived Assets From Business Acquisitions					125,200
Payment Of Deferred Taxes					5,000
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net, Increase (Decrease)			5,800
External Revenues			8,388	9,404
Long-lived assets	22,254	24,334	22,254	24,334	22,254
Effect of Exchange Rate on Revenue			(1,200)
Long Lived Assets, Increase (Decrease)					$ 2,100
Foreign Currency Translation Gain (Loss), Percent					3.00%
Dubai [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues			0	0
Long-lived assets	$ 53,786	$ 37,943	53,786	$ 37,943	$ 53,786
Long Lived Assets, Increase (Decrease)					$ 15,800
ItzCash [Member] | India
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net, Increase (Decrease)			8,400
e- governance contracts [Member] | India
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net, Increase (Decrease)			$ 5,300