Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 1,653	$ 2,062
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,153	1,131
Gain on sale of fixed assets	(31)
Share-based compensation	210us-gaap_ShareBasedCompensation	265us-gaap_ShareBasedCompensation
Excess tax benefit on share-based compensation	(183)	(563)
Deferred income taxes	96us-gaap_DeferredIncomeTaxExpenseBenefit	(121)us-gaap_DeferredIncomeTaxExpenseBenefit
Changes in operating assets and liabilities:
Receivables, net	(1,753)us-gaap_IncreaseDecreaseInReceivables	(1,118)us-gaap_IncreaseDecreaseInReceivables
Inventories	(32)us-gaap_IncreaseDecreaseInInventories	(1,129)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses	(1,396)	(1,372)
Refundable income taxes	796	1,151
Other assets	(51)	(51)
Accounts payable	(1,062)	1,567
Accrued taxes and other expenses	(720)	(2,548)
Retirement and other liabilities	166	(280)
Net cash used in operating activities	(1,154)	(1,006)
Cash flows from investing activities:
Additions to property, plant, and equipment	(8,522)	(1,377)
Proceeds from sale of fixed assets	31
Net cash used in investing activities	(8,491)	(1,377)
Cash flows from financing activities:
Principal repayments of long-term debt	(247)us-gaap_RepaymentsOfLongTermDebt	(243)us-gaap_RepaymentsOfLongTermDebt
Proceeds from the exercise of stock options, net of attestation	128	81
Excess tax benefit on share-based compensation	183	563
Payment of statutory withholdings for stock options exercised and restricted stock units vested	(79)	(701)
Net cash used in financing activities	(15)	(300)
Net decrease in cash and cash equivalents	(9,660)	(2,683)
Cash and cash equivalents at beginning of year	34,052	37,303
Cash and cash equivalents at end of year	$ 24,392	$ 34,620

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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