Orange County-Poughkeepsie Limited Partnership (Summarized O-P Income Statement Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Company's share	$ 2,040
O-P [Member]
Net sales	84,441
Cellular service cost	37,610
Operating expenses	21,689
Operating income	25,142
Other income	19
Net income	25,161
Company's share	$ 2,040