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(Debt, Schedule of Ratio of Net Indebtedness) (Details)	12 Months Ended
(Debt, Schedule of Ratio of Net Indebtedness) (Details)	Dec. 31, 2013
Summary of leverage and applicable margin
Percent Of Unused Portion Line Of Credit Facility Triggering Lower Commitment Fee Percentage	50.00%
Minimum [Member]
Summary of leverage and applicable margin
Commitment fee on unused percentage	0.35%
Minimum [Member] \| Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	4
Minimum [Member] \| Greater than or equal to 5.00 to 1.00 but less than 5.50 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	5
Minimum [Member] \| Greater than or equal to 5.50 to 1.00 but less than 6.00 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	5.5
Minimum [Member] \| Greater than or equal to 6.00 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	6
Maximum [Member]
Summary of leverage and applicable margin
Commitment fee on unused percentage	0.25%
Maximum [Member] \| Less than 4.00 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	4
Maximum [Member] \| Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	5
Maximum [Member] \| Greater than or equal to 5.00 to 1.00 but less than 5.50 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	5.5
Maximum [Member] \| Greater than or equal to 5.50 to 1.00 but less than 6.00 to 1.00 [Member]
Summary of leverage and applicable margin
Ratio Of Net Indebtedness to Ebitda	6
LIBOR [Member] \| Line of Credit [Member]
Summary of leverage and applicable margin
Applicable Margin	190.00%
LIBOR [Member] \| Line of Credit [Member] \| Less than 4.00 to 1.00 [Member]
Summary of leverage and applicable margin
Applicable Margin	1.75%
LIBOR [Member] \| Line of Credit [Member] \| Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 [Member]
Summary of leverage and applicable margin
Applicable Margin	1.90%
LIBOR [Member] \| Line of Credit [Member] \| Greater than or equal to 5.00 to 1.00 but less than 5.50 to 1.00 [Member]
Summary of leverage and applicable margin
Applicable Margin	2.10%
LIBOR [Member] \| Line of Credit [Member] \| Greater than or equal to 5.50 to 1.00 but less than 6.00 to 1.00 [Member]
Summary of leverage and applicable margin
Applicable Margin	2.20%
LIBOR [Member] \| Line of Credit [Member] \| Greater than or equal to 6.00 to 1.00 [Member]
Summary of leverage and applicable margin
Applicable Margin	2.50%
LIBOR [Member] \| Line of Credit [Member] \| Greater than or equal to 6.50 to 1.00 [Member]
Summary of leverage and applicable margin
Applicable Margin	2.75%