Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Jan. 31, 2013
Debt Instrument [Line Items]
Total debt	$ 209,282	$ 209,911
Unamortized original issue discount	(3,918)	(3,689)
Less current maturities	400	400
Total long-term debt	208,882	209,511
Senior Subordinated 6.25% Notes
Debt Instrument [Line Items]
Total debt	$ 210,000	$ 210,000
Senior Subordinated Notes, interest rate	6.25%	6.25%	6.25%
Other debt
Debt Instrument [Line Items]
Total debt	$ 3,200	$ 3,600