Financing Agreements - Margin Based on Remaining Borrowing Availability (Details) - Revolving Credit Facility [Member]	12 Months Ended
	Dec. 31, 2015
Base Rate [Member] | Greater than $350 [Member]
Debt Instrument [Line Items]
Margin Rate	0.50%
Base Rate [Member] | Greater than $150 but less than or equal to $350 [Member]
Debt Instrument [Line Items]
Margin Rate	0.75%
Base Rate [Member] | $150 or less [Member]
Debt Instrument [Line Items]
Margin Rate	1.00%
London Interbank Offered Rate (LIBOR) [Member] | Greater than $350 [Member]
Debt Instrument [Line Items]
Margin Rate	1.50%
London Interbank Offered Rate (LIBOR) [Member] | Greater than $150 but less than or equal to $350 [Member]
Debt Instrument [Line Items]
Margin Rate	1.75%
London Interbank Offered Rate (LIBOR) [Member] | $150 or less [Member]
Debt Instrument [Line Items]
Margin Rate	2.00%