Business Combinations and Segment Information - Summary of major asset and liability category of BTD Georgia (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets:
Goodwill	$ 37,572	$ 39,732
BTD-Georgia
Assets:
Current Assets	4,906
Goodwill	6,083
Other Intangible Assets	6,270
Other Amortizable Assets	1,380
Fixed Assets	13,649
Total Assets	32,288
Liabilities:
Current Liabilities	2,971
Lease Obligation	11
Total Liabilities	2,982
Cash Paid	$ 29,306