Other Investments and Assets - Summary of Other Investments and Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investments All Other Investments [Abstract]
Cash surrender value of life insurance	$ 21,970	$ 20,866
Self-insured liability receivable	5,979	7,728
Workers’ compensation insurance security deposits	4,250	4,250
Other mutual funds	2,192	2,536
Unamortized debt issuance costs	1,572	1,964
Other	3,240	3,330
Total other investments and assets	$ 39,203	$ 40,674