Fair Value Disclosures - Quantitative Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Summit Earnout [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs Discount Rate	14.50%
Fair Value Inputs Weighted Average Probabilities	As of September 30, 2012, the probabilities applied to the payout scenarios ranged from 15% to 50%, depending on the Company’s estimate of the likelihood of each payout scenario.
Fair Value Measurements Valuation Techniques	Discounted cash flow
Acquisition-related Consideration	$ 6,036
Non-competition Agreement Obligation [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs Discount Rate	14.00%
Fair Value Measurements Valuation Techniques	Discounted cash flow
Acquisition-related Consideration	458
G.W. Smith Holdback [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs Discount Rate	15.00%
Fair Value Measurements Valuation Techniques	Discounted cash flow
Acquisition-related Consideration	1,000
NP Coil Dexter Holdback [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value Inputs Discount Rate	14.80%
Fair Value Measurements Valuation Techniques	Discounted cash flow
Acquisition-related Consideration	$ 977