Long-term Debt Credit Agreement Covenants (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Total Credit Facility [Member] Interest coverge ratio [Member]	Dec. 31, 2013 Total Credit Facility [Member] Maximum Total Leverage Ratio [Member] Closing Date through September 30, 2013 [Member]	Dec. 31, 2013 Total Credit Facility [Member] Maximum Total Leverage Ratio [Member] October 1, 2013 through September 30, 2014 [Member]	Dec. 31, 2013 Total Credit Facility [Member] Maximum Total Leverage Ratio [Member] October 1, 2014 through September 30, 2015 [Member]	Dec. 31, 2013 Total Credit Facility [Member] Maximum Total Leverage Ratio [Member] October 1, 2015 and thereafter [Member]	Dec. 31, 2013 Revolving Credit Facility [Member]	Oct. 02, 2012 Revolving Credit Facility [Member]
Debt Instrument, Covenant Description		3.50 to 1.00	4.75 to 1.00	4.25 to 1.00	3.75 to 1.00	3.50 to 1.00
Line of Credit Facility, Covenant Compliance	the Company was in compliance with the covenants under the Credit Agreement
Line of Credit Facility, Maximum Borrowing Capacity							$ 425,000	$ 425,000