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Basis of Presentation - Reclassifications to Previously Reported Amounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Service
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues	$ 65,726	$ 55,501	$ 193,951	$ 162,501
Service | As previously reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues		60,981		178,865
Service | Blackhawk adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues		(5,480)		(16,364)
Product
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues	$ 19,421	16,230	$ 58,474	61,526
Product | As previously reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues		10,750		45,162
Product | Blackhawk adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of revenues		$ 5,480		$ 16,364

X

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

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