CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
OPERATING ACTIVITIES:
Net income	$ 2,073	$ 1,626
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,580	7,009
Asset impairment	0	633
Accrued patronage refunds	(205)	(177)
Stock-based compensation expense	231	219
Loss on financial derivative instruments	32	28
Excess tax benefit	(64)	(95)
Other	195	677
Changes in operating assets and liabilities, net of effect from acquired net assets
Receivables	5,852	(2,181)
Prepaid expenses	(551)	(1,112)
Inventories	(115)	1,132
Accounts payable and accrued expenses	(2,694)	(5,323)
Deferred revenue, billings and deposits	(497)	(1,618)
Income taxes	1,183	500
Other	458	635
Net cash provided by operating activities	13,478	1,953
INVESTING ACTIVITIES:
Additions to property, plant and equipment and materials and supplies	(5,213)	(5,711)
Proceeds from sales of assets	74	0
Net cash used in investing activities	(5,139)	(5,711)
FINANCING ACTIVITIES:
Borrowings on extended term payable arrangement	11,497	16,406
Payments on extended term payable arrangement	(13,385)	(14,103)
Payments on credit facility and capital lease obligations	(398)	(410)
Proceeds from issuance of common stock	208	269
Stock repurchase	0	(528)
Dividends paid	(2,042)	(1,970)
Excess tax benefit	64	95
Net cash used in financing activities	(4,056)	(241)
Net increase (decrease) in cash and cash equivalents	4,283	(3,999)
Cash and cash equivalents at beginning of the period	7,960	8,305
Cash and cash equivalents at the end of the period	12,243	4,306
Supplemental disclosure of cash flow information:
Cash paid for interest	1,357	1,493
Net cash paid for income taxes	$ 258	$ 355