CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
OPERATING ACTIVITIES:
Consolidated net income	$ 9,181	$ 6,520
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	2,858	2,802
Gain on disposal of equipment		(2)
Loss on deconsolidation of subsidiary	83
Provision for doubtful accounts	158	135
Excess tax benefit from stock-based compensation	(22)	(148)
Issuance of non-employee director shares	96	75
Deferred income tax provision	(155)	104
Changes in operating assets and liabilities:
Accounts receivable	(18,412)	(24,424)
Inventories	(11,598)	(8,607)
Prepaid expenses	(846)	(696)
Accounts payable	18,583	20,521
Accrued liabilities	2,510	2,141
Net cash flows from operating activities	2,436	(1,579)
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(3,698)	(2,072)
Proceeds from sale of property, plant and equipment		3
Payments received on notes receivable	23	71
Net cash flows from investing activities	(3,675)	(1,998)
FINANCING ACTIVITIES:
Payments of cash dividends	(5,083)	(4,717)
Proceeds from stock option exercises	180	509
Excess tax benefit from stock-based compensation	22	148
Net cash flows from financing activities	(4,881)	(4,060)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND TEMPORARY INVESTMENTS	(465)	251
NET CHANGE IN CASH AND TEMPORARY INVESTMENTS	(6,585)	(7,386)
CASH AND TEMPORARY INVESTMENTS, beginning of period	42,864	48,591
CASH AND TEMPORARY INVESTMENTS, end of period	36,279	41,205
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest	743	665
Cash payments for income taxes, net of refunds	$ 5,034	$ 1,274