Derivative Financial Instruments and Credit Risk - Narrative (Details)	12 Months Ended
	Dec. 31, 2015 USD ($)	Mar. 23, 2015 USD ($) derivative	Dec. 31, 2014 USD ($)
Derivative [Line Items]
Derivative, fair value	$ 2,900,000		$ 3,900,000
Foreign Exchange Contract
Derivative [Line Items]
Derivative asset, notional amount	352,300,000
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, effective portion recognized in other comprehensive income (loss)	800,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative, number of instruments | derivative		2
Derivative, fair value	$ 1,500,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap, First
Derivative [Line Items]
Derivative, amount of borrowings covered by swap		$ 75,000,000
Derivative, fixed interest rate		1.592%
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap, Second
Derivative [Line Items]
Derivative, amount of borrowings covered by swap		$ 100,000,000
Derivative, fixed interest rate		1.711%