Goodwill and Other Intangible Assets - Summary of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 48,287
Impairment of goodwill	0
Goodwill, ending balance	48,287
Nevada
Goodwill [Roll Forward]
Goodwill, beginning balance	33,665
Impairment of goodwill	0
Goodwill, ending balance	33,665
Midwest
Goodwill [Roll Forward]
Goodwill, beginning balance	14,622
Impairment of goodwill	0
Goodwill, ending balance	$ 14,622