Description Of Business And Basis Of Presentation (Narrative) (Details) - Guidehouse LLP [Member] - $ / shares	6 Months Ended
	Jun. 30, 2019	Aug. 02, 2019
Subsequent Event [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Common stock, par value		$ 0.001
Business acquisition, share price		$ 28.00
Isaac Merger Sub, Inc. [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Merger agreement date	Aug. 02, 2019