Goodwill, Customer Relationships and Trademarks - Roll Forward (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Balance at beginning of period	$ 0	$ 0
Balance at end of period	18,379,000	0	$ 0
Finite-lived Intangible Assets [Roll Forward]
Balance at end of period	14,623,000
Customer Relationships— Acquired
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	0	0
Additions	0	0
Amortization expense	(4,503,000)	0
Balance at end of period	10,380,000	0	0
Customer Relationships— Other
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	1,501,000	0
Additions	2,731,000	1,589,000
Amortization expense	(1,183,000)	(88,000)
Balance at end of period	3,049,000	1,501,000	0
Trademarks
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	0	0
Additions	0	0
Amortization expense	(74,000)	0	0
Balance at end of period	1,194,000	$ 0	$ 0
CenStar
Goodwill [Roll Forward]
Acquisitions	6,396,000
Balance at end of period	6,396,000
CenStar | Customer Relationships— Acquired
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	5,494,000
CenStar | Customer Relationships— Other
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	0
CenStar | Trademarks
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	651,000
Oasis
Goodwill [Roll Forward]
Acquisitions	11,983,000
Oasis | Customer Relationships— Acquired
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	9,389,000
Oasis | Customer Relationships— Other
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	0
Oasis | Trademarks
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	$ 617,000