Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Intangible assets
Total	$ 31,114		$ 32,841
Amortization expense of intangible assets	1,727	$ 1,624
Estimated future amortization expense for intangible assets
2017 (remaining nine months)	4,961
2018	6,464
2019	6,318
2020	3,641
2021	2,543
Thereafter	7,187
Tradename
Intangible assets
Total	$ 11,000		$ 11,754
Tradename | Minimum
Intangible assets
Amortization Period			3 years
Tradename | Maximum
Intangible assets
Amortization Period	10 years
Customer relationships
Intangible assets
Total	$ 19,270		$ 20,136
Customer relationships | Minimum
Intangible assets
Amortization Period	3 years
Customer relationships | Maximum
Intangible assets
Amortization Period	15 years
Non-compete agreements
Intangible assets
Total	$ 844		$ 951
Non-compete agreements | Minimum
Intangible assets
Amortization Period	2 years
Non-compete agreements | Maximum
Intangible assets
Amortization Period	5 years