Goodwill And Intangible Assets (Summary Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 67,256	$ 37,798
Accumulated Amortization	(14,211)	(12,311)
Net Carrying Amounts	53,045	25,487
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	54,389	31,156
Accumulated Amortization	(11,476)	(10,835)
Net Carrying Amounts	42,913	20,321
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	1,745	1,477
Accumulated Amortization	(848)	(715)
Net Carrying Amounts	897	762
Customer Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	2,977	402
Accumulated Amortization	(1,079)	(170)
Net Carrying Amounts	1,898	232
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	213	159
Accumulated Amortization	(88)	(83)
Net Carrying Amounts	125	76
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	7,932	4,604
Accumulated Amortization	(720)	(508)
Net Carrying Amounts	$ 7,212	$ 4,096