CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
OPERATING ACTIVITIES:
Net income	$ 9,264	$ 9,947
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	2,686	2,198
Provision for doubtful accounts	(50)	86
Issuance of non-employee director shares	150	96
Deferred income tax provision	63	42
(Gain) Loss on disposal of property, plant and equipment	(643)	3
Changes in operating assets and liabilities:
Accounts receivable	(8,455)	(29,407)
Inventories	(3,448)	(2,796)
Prepaid expenses	820	(2,097)
Other assets	45	(38)
Accounts payable	(2,971)	5,864
Accrued liabilities	3,931	3,552
Net cash flows from (used in) operating activities	1,392	(12,550)
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(14,304)	(13,200)
Proceeds from sale of plant, property & equipment	1,305	5
Net cash flows from (used in) investing activities	(12,999)	(13,195)
FINANCING ACTIVITIES:
Net borrowings under credit facility	15,000	20,000
Payments of cash dividends	(4,091)	(3,858)
Proceeds from stock option exercises	142
Net cash flows from (used in) financing activities	11,051	16,142
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND TEMPORARY INVESTMENTS	1,471	706
NET CHANGE IN CASH AND TEMPORARY INVESTMENTS	915	(8,897)
CASH AND TEMPORARY INVESTMENTS, beginning of period	31,115	38,449
CASH AND TEMPORARY INVESTMENTS, end of period	32,030	29,552
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest	1,044	820
Cash payments for income taxes, net of refunds	$ 761	$ 3,443