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	$ 3,912	$ 2,880
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Gain on sale of product line	(405)	(405)
Depreciation and amortization	3,564	3,747
Deferred income taxes	16	577
Stock based compensation	366	420
Loss on disposition of property, plant and equipment	16	2
Changes in operating assets and liabilities:
Accounts receivable	(10,363)	(15,163)
Inventories	(2,348)	1,279
Accounts payable	4,478	2,952
Accrued payroll and other compensation	(831)	1,041
Accrued taxes	1,350	1,787
Other, net	858	(1,222)
Net cash provided by (used for) operating activities	613	(2,105)
Cash flows from investing activities:
Capital expenditures	(2,962)	(1,552)
Reimbursement of cash from leasing company		613
Proceeds from maturity of short-term investment	12,015
Net cash provided by (used for) investing activities	9,053	(939)
Cash flows from financing activities:
Debt repayments	(360)	(357)
Common stock issued	2	22
Net cash used for financing activities	(358)	(335)
Effect of exchange rate changes on cash	553	695
Increase (decrease) in cash and cash equivalents	9,861	(2,684)
Cash and cash equivalents at beginning of period	30,905	24,988
Cash and cash equivalents at end of period	$ 40,766	$ 22,304

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).