Fair Value (Schedule of Reconciliation of Fair Value of Recurring Level 3 Fair Value Measurements) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		$ 5,640	$ 5,340
Additions to contingent consideration obligation		0	0
Total changes in fair value included in earnings		(1,140)	120
Ending balance		4,500	5,460
Unrealized (gains) losses still held	[1]	$ (1,140)	$ 120

[1] Represents the unrealized (gains) losses recorded in earnings or other comprehensive income (loss) during the period for liabilities classified as Level 3 that are still held at the end of the period.