Fair Value of Financial Instruments (Summary of Valuation of Financial Instruments Reported at Fair Value on a Recurring Basis by Pricing Level) (Details) (Recurring basis, USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financial instruments reported at fair value on a recurring basis
Cash and cash equivalents	$ 38,803	$ 34,702
Interest rate contracts
Financial instruments reported at fair value on a recurring basis
Interest rate contracts - asset position	378	811
Interest rate contracts - liability position	44	104
Quoted market prices in active markets (Level 1)
Financial instruments reported at fair value on a recurring basis
Cash and cash equivalents	38,803	34,702
Quoted market prices in active markets (Level 1) | Interest rate contracts
Financial instruments reported at fair value on a recurring basis
Interest rate contracts - asset position	0
Interest rate contracts - liability position	0	0
Significant other observable inputs (Level 2)
Financial instruments reported at fair value on a recurring basis
Cash and cash equivalents	0	0
Significant other observable inputs (Level 2) | Interest rate contracts
Financial instruments reported at fair value on a recurring basis
Interest rate contracts - asset position	378	811
Interest rate contracts - liability position	44	104
Significant unobservable inputs (Level 3)
Financial instruments reported at fair value on a recurring basis
Cash and cash equivalents	0	0
Significant unobservable inputs (Level 3) | Interest rate contracts
Financial instruments reported at fair value on a recurring basis
Interest rate contracts - asset position	0
Interest rate contracts - liability position	$ 0	$ 0