Fair Value Measurements - Level 3 Rollforward (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in Fair Value Estimate	$ 0	$ 675	$ 0	$ 675
Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance			4,876
Interest Accretion			20
Payments			(4,834)
Ending Balance	62		62
Summit Earnout [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance			4,697
Interest Accretion			12
Payments			(4,709)
Ending Balance	0		0
Non-competition Agreement Obligation [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance			179
Interest Accretion			8
Payments			(125)
Ending Balance	$ 62		$ 62