UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities
Net income	$ 4,466	$ 3,027
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,929	10,898
Amortization	1,878	3,040
Provision for bad debt	624	1,284
Stock based compensation expense	403	310
Deferred income taxes	(5,304)	(1,341)
Net loss on disposal of equipment	55	53
Realized (gain) loss on disposal of investments	(48)	27
Unrealized (gains) on investments	(161)	(98)
Net (gain) loss from patronage and equity Investments	(343)	186
Other	229	25
(Increase) decrease in:
Accounts receivable	(704)	(20)
Materials and supplies	211	1,450
Income taxes receivable	11,147	2,576
Increase (decrease) in:
Accounts payable	(2,095)	(3,617)
Deferred lease payable	122	107
Income taxes payable	0	539
Other prepaids, deferrals and accruals	(1,959)	(495)
Net cash provided by operating activities	22,450	17,951
Cash Flows from Investing Activities
Purchase and construction of property, plant and equipment	(14,831)	(16,121)
Proceeds from sales of assets	1,146	0
Proceeds from sale of equipment	71	70
Purchase of investment securities	0	(84)
Proceeds from sale of investment securities	412	317
Net cash used in investing activities	(13,202)	(15,818)
Cash Flows From Financing Activities
Principal payments on long-term debt	(5,434)	(3,032)
Repurchases of stock	(47)	0
Proceeds from sale of stock	2	4
Net cash used in financing activities	(5,479)	(3,028)
Net increase (decrease) in cash and cash equivalents	3,769	(895)
Cash and cash equivalents:
Beginning	15,874	27,453
Ending	19,643	26,558
Cash paid (received) for:
Interest	1,636	1,988
Income taxes	$ (2,532)	$ 509