Net Periodic Benefit Cost-Defined Benefit Plans (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Net periodic benefit cost of the domestic non-contributory defined benefit plan
Service cost	$ 140,000	$ 160,000	$ 420,000	$ 478,000
Interest cost	215,000	192,000	644,000	578,000
Expected return on plan assets	(288,000)	(246,000)	(865,000)	(738,000)
Amortization of prior service cost	0	6,000	0	19,000
Amortization of net loss	52,000	120,000	157,000	359,000
Net periodic cost	119,000	232,000	356,000	696,000
Expected contribution to Pension Plan in 2014					600,000
Employer contributions made to the defined benefit plan			635,000
Anticipated additional contributions anticipated during the remainder of 2014	$ 180,000		$ 180,000