Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2005	Sep. 30, 2004	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Intangible assets
Intangible assets, gross			$ 136,806		$ 137,755
Less: Accumulated amortization			(77,454)		(63,177)
Intangible assets, net			59,352		74,578
Amortization of intangibles
Remainder of 2015			5,044
2016			19,933
2017			16,613
2018			15,993
2019			1,582
Thereafter			187
Amortization expense	$ 5,000	$ 5,200	15,226	$ 15,572
Customer Relationships
Intangible assets
Intangible assets, gross			101,806		102,755
Less: Accumulated amortization			(53,909)		(44,020)
Intangible assets, net			47,897		58,735
Restrictive Covenant
Intangible assets
Intangible assets, gross			18,000		18,000
Less: Accumulated amortization			(13,939)		(11,394)
Intangible assets, net			4,061		6,606
Trade Names
Intangible assets
Intangible assets, gross			17,000		17,000
Less: Accumulated amortization			(9,606)		(7,763)
Intangible assets, net			$ 7,394		$ 9,237
Minimum | Customer Relationships
Intangible assets
Useful Life			5 years		5 years
Minimum | Restrictive Covenant
Intangible assets
Useful Life			3 years		3 years
Minimum | Trade Names
Intangible assets
Useful Life			3 years		3 years
Maximum | Customer Relationships
Intangible assets
Useful Life			10 years		10 years
Maximum | Restrictive Covenant
Intangible assets
Useful Life			7 years		7 years
Maximum | Trade Names
Intangible assets
Useful Life			5 years		5 years