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Supplemental Consolidated Balance Sheet Information (Components Of Other Assets) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Supplemental Consolidated Balance Sheet Information [Abstract]    
Notes receivable - non-current $ 3,083 $ 2,943
Capitalized client-facing software 1,523 1,733
Prepaid recruiting and retention incentives - non-current 10,605 11,116
Prepaid expenses and other non-current assets 4,432 2,490
Other assets $ 19,643 $ 18,282