Revenue from Contracts with Clients and Customers - Summary of Contract Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Contract Assets
Trade Accounts Receivable, net	$ 71,183	$ 72,180
Unbilled Accounts Receivable	1,079	235
Costs to Fulfill	4,875	5,214
Total Contract Assets	77,137	77,629
Contract Liabilities
Accrued Contract Liabilities	1,806	535
Deferred Revenue	7,456	9,255
Total Contract Liabilities	$ 9,262	$ 9,790

Contract with Customer, Asset and Capitalized Contracts Cost, Net

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- Definition

Contract with Customer, Liability, Accrued Contract Liabilities

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- Definition

Contract with Customer, Liability, Deferred Revenue

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- Definition

Trade accounts receivable net current.

+ References

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

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-Section 50
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- Definition

Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

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