Summary Of Business And Significant Accounting Policies (Reconciliation Of Items Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Contingent Consideration - BCI
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances, Beginning	$ 739	$ 2,705
Losses on revaluation of contingent consideration	11	104
Payment of contingent consideration	(750)	(2,070)
Balances, Ending	0	739
Contingent Consideration - CBS
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances, Beginning	0	1,170
Losses on revaluation of contingent consideration	0	7
Payment of contingent consideration	0	(1,177)
Balances, Ending	$ 0	$ 0