Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - Recurring - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets
Deferred compensation	$ 7,733	$ 7,774
Total assets	7,733	7,774
Liabilities
Contingent consideration	10,298	10,840
Deferred compensation	14,146	11,836
Total liabilities	24,444	22,676
Level 1
Assets
Deferred compensation	7,733	7,774
Total assets	7,733	7,774
Liabilities
Contingent consideration	0	0
Deferred compensation	14,146	11,836
Total liabilities	14,146	11,836
Level 2
Assets
Deferred compensation	0	0
Total assets	0	0
Liabilities
Contingent consideration	0	0
Deferred compensation	0	0
Total liabilities	0	0
Level 3
Assets
Deferred compensation	0	0
Total assets	0	0
Liabilities
Contingent consideration	10,298	10,840
Deferred compensation	0	0
Total liabilities	$ 10,298	$ 10,840