Fair Value Disclosures - Quantitative Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
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 June 30, 2013, the probabilities applied to the payout scenarios ranged from 10% to 70%, depending on the Company’s estimate of the likelihood of each payout scenario.
Fair Value Measurements Valuation Techniques		Discounted cash flow
Acquisition-related Consideration	$ 5,498	$ 5,498
Change in Fair Value Estimate	675
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	$ 296	$ 296