Fair Value Measurement - Carrying Value and Estimated Fair Value Table (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value Measurement
Long-term borrowings	$ 225.1	$ 250.8
Carrying Amount
Fair Value Measurement
Cash and cash equivalents	18.7	18.2
Total Fair Value
Fair Value Measurement
Cash and cash equivalents	18.7	18.2
Senior credit facility, net of original discount on borrowings and deferred financing costs
Fair Value Measurement
Long-term borrowings	223.1	248.4
Senior credit facility, net of original discount on borrowings and deferred financing costs | Carrying Amount
Fair Value Measurement
Long-term borrowings	223.1	248.4
Senior credit facility, net of original discount on borrowings and deferred financing costs | Total Fair Value
Fair Value Measurement
Long-term borrowings	223.1	248.4
Other borrowings
Fair Value Measurement
Long-term borrowings	2.0	2.4
Other borrowings | Carrying Amount
Fair Value Measurement
Long-term borrowings	2.0	2.4
Other borrowings | Total Fair Value
Fair Value Measurement
Long-term borrowings	$ 2.0	$ 2.4