Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Accrued Expenses [Abstract]
Accrued earnouts	$ 12,194	$ 15,086
Salaries and benefits	10,442	13,440
Real estate and property taxes	8,645	5,331
Other	34,083	31,696
Total accrued expenses	$ 65,364	$ 65,553