Fair Value of Financial Instruments Financial Instruments Carried at Fair Value-Level 2 (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets carried at fair value	$ 95,000	$ 136,000
Financial liabilities carried at fair value	17,767,000	4,711,000
Interest rate swap agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets carried at fair value, Interest rate swap agreements	0	136,000
Financial liabilities carried at fair value, Interest rate swap agreements	16,328,000	4,711,000
British pound forward purchase contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets carried at fair value, British pound forward purchase contracts	95,000	0
Financial liabilities carried at fair value, British pound forward purchase contracts	$ 1,439,000	$ 0