Fair Value of Financial Instruments (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Contingent acquisition liabilities
Balance at Beginning of period	$ 10,472	$ 7,080
Level 3 liabilities acquired	1,353	5,912
Level 3 liabilities settled	(3,338)	(2,488)
Adjustments to liabilities included in earnings	(446)	179
Expenses allocated to profit sharing agreement	(528)	(211)
Adjustment to purchase price allocation	(75)
Balance at End of period	$ 7,438	$ 10,472