Subsequent Events Subsequent Events	9 Months Ended
Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events Amendment of Credit Facility On October 30, 2015, we amended the New Credit Facility (the "Amended Credit Facility") to exercise the accordion feature that allows us to increase the size of the revolver and to effect certain other changes. The Amended Credit Facility is comprised of a $325 million senior secured revolver (with a $30 million letter of credit sublimit). The maturity date for the credit facility remains March 30, 2020. There was no change to the interest rates for the facility. As of the closing, there were $155 million of borrowings outstanding under the amended revolver. Subsequent to the closing, additional borrowings under the Amended Credit Facility will be used to fund the $50 million accelerated share repurchase agreement (see Accelerated Share Repurchase below). Accelerated Share Repurchase On November 6, 2015, as part of our previously authorized share repurchase programs, we entered into a variable term, capped accelerated share repurchase (the "ASR") agreement with Wells Fargo Bank, National Association ("Wells Fargo"), to repurchase an aggregate of $50 million of our common stock. In exchange for a $50 million up-front payment, we will receive an initial delivery of shares in the fourth quarter of 2015, which represents the minimum shares to be delivered based on the cap price. The total aggregate number of shares of our common stock to be repurchased pursuant to the ASR agreement will be based generally on the average of the daily volume-weighted average prices of our common stock, less a fixed discount, over the term of the ASR agreement, subject to a minimum number of shares. The ASR agreement is expected to be completed no later than July 2016, although the completion date may be accelerated or, under certain circumstances, extended, at Wells Fargo's option. At settlement, we may be entitled to receive additional shares of our common stock. Interest Rate Hedge On October 1, 2015, we entered into an additional interest rate swap to hedge a portion of the cash flows of our floating rate debt. We designated the interest rate swap as a cash flow hedge of our exposure to variability in future cash flows attributable to payments of LIBOR due on a related $50 million notional debt obligation. Based on the interest rate as determined by our consolidated leverage ratio in effect as of September 30, 2015, under the terms of the swap, we will pay a fixed rate of 3.96% on the notional amount from March 29, 2018 through March 31, 2026 and receive payments during these periods from a counterparty based on the 30-day LIBOR rate.

Subsequent Events

Amendment of Credit Facility

On October 30, 2015, we amended the New Credit Facility (the "Amended Credit Facility") to exercise the accordion feature that allows us to increase the size of the revolver and to effect certain other changes. The Amended Credit Facility is comprised of a $325 million senior secured revolver (with a $30 million letter of credit sublimit). The maturity date for the credit facility remains March 30, 2020. There was no change to the interest rates for the facility. As of the closing, there were $155 million of borrowings outstanding under the amended revolver. Subsequent to the closing, additional borrowings under the Amended Credit Facility will be used to fund the $50 million accelerated share repurchase agreement (see Accelerated Share Repurchase below).

Accelerated Share Repurchase

On November 6, 2015, as part of our previously authorized share repurchase programs, we entered into a variable term, capped accelerated share repurchase (the "ASR") agreement with Wells Fargo Bank, National Association ("Wells Fargo"), to repurchase an aggregate of $50 million of our common stock. In exchange for a $50 million up-front payment, we will receive an initial delivery of shares in the fourth quarter of 2015, which represents the minimum shares to be delivered based on the cap price. The total aggregate number of shares of our common stock to be repurchased pursuant to the ASR agreement will be based generally on the average of the daily volume-weighted average prices of our common stock, less a fixed discount, over the term of the ASR agreement, subject to a minimum number of shares. The ASR agreement is expected to be completed no later than July 2016, although the completion date may be accelerated or, under certain circumstances, extended, at Wells Fargo's option. At settlement, we may be entitled to receive additional shares of our common stock.

Interest Rate Hedge

On October 1, 2015, we entered into an additional interest rate swap to hedge a portion of the cash flows of our floating rate debt. We designated the interest rate swap as a cash flow hedge of our exposure to variability in future cash flows attributable to payments of LIBOR due on a related $50 million notional debt obligation. Based on the interest rate as determined by our consolidated leverage ratio in effect as of September 30, 2015, under the terms of the swap, we will pay a fixed rate of 3.96% on the notional amount from March 29, 2018 through March 31, 2026 and receive payments during these periods from a counterparty based on the 30-day LIBOR rate.