Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Accrued Expenses and Other Current Liabilities (Details)

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Summary of Significant Accounting Policies - Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Accounting Policies [Abstract]    
Accrued compensation, payroll taxes, and benefits $ 12,492 $ 8,517
Self-insured medical plans 1,831 1,800
Current portion of liabilities related to acquisitions 6,502 3,905
Other current liabilities 7,469 8,683
Total accrued expenses and other current liabilities $ 28,294 $ 22,905