Defined Benefit Retirement Plan (Components of Net Periodic Pension Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Retirement Plan [Abstract]
Interest cost	$ 107	$ 99	$ 213	$ 198
Expected return on plan assets	(130)	(140)	(259)	(280)
Recognized net actuarial loss	10	51	20	102
Net periodic pension (income) cost	(13)	10	(26)	20
Amortization of net actuarial loss recognized in other comprehensive income (loss)	(10)	(51)	(20)	(102)
Total recognized in net periodic pension cost and other comprehensive income (loss)	$ (23)	$ (41)	$ (46)	$ (82)