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Related-Party Transactions	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Related-Party Transactions	11. RELATED-PARTY TRANSACTIONS Our Chief Sales Officer owned a .01% general partnership interest and a 10.49% limited partnership interest in 417 Oakbend, LP, a Texas limited partnership, until April 2016.  For the period under his ownership during 2016, we paid rent on our Dallas office space to 417 Oakbend, LP in the amount of $0.1 million.  We paid rent on our Dallas office space in the amount of $0.4 million for the year ended December 31, 2015.

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- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-URI http://asc.fasb.org/topic&trid=2122745

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