Derivative Financial Instruments (Classifications on Consolidated Balance Sheets) (Details) (Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative, notional amount	$ 150,000
Derivative, fair value, net	(1,192)	95
Interest Rate Swap One [Member]
Derivative [Line Items]
Derivative, notional amount	50,000
Derivative, fixed interest rate	1.3075%
Derivative, fair value, net	(406)	26
Interest Rate Swap Two [Member]
Derivative [Line Items]
Derivative, notional amount	50,000
Derivative, fixed interest rate	1.297%
Derivative, fair value, net	(388)	40
Interest Rate Swap Three [Member]
Derivative [Line Items]
Derivative, notional amount	50,000
Derivative, fixed interest rate	1.3025%
Derivative, fair value, net	$ (398)	$ 29