Orange County-Poughkeepsie Limited Partnership (Summarized O-P Income Statement Information) (Details) - Jun. 30, 2014 - USD ($) $ in Thousands	Total	Total
Company's share	$ 50,333	$ 52,373
O-P [Member]
Net sales	86,305	170,746
Cellular service cost	42,441	80,051
Operating expenses	23,037	44,726
Operating income	20,827	45,969
Other income	42	62
Net income	20,869	46,031
Company's share	$ 558	$ 2,597