Significant Accounting Policies - (Details 4) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Deductible for individual healthcare claims	$ 275,000
Deductible for workers' compensation	500,000
Deductible for automobile and general liability claims	250,000
Self insurance reserve	$ 6,100,000	$ 7,800,000