Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities:
Net income	$ 3,479	$ 3,118
Adjustments to reconcile net income to net cash provided (used) by operating activities:
Depreciation	673	623
Amortization	202	162
Stock compensation expense	388	326
Changes in operating assets and liabilities:
Accounts receivable	(1,216)	(3,140)
Inventories	1,039	(5,068)
Prepaid expenses and other current assets	13	(476)
Accounts payable	(1,447)	1,558
Other accrued liabilities	(70)	1,423
Total adjustments	(418)	(4,592)
Net cash provided (used) by operating activities	3,061	(1,474)
Investing Activities:
Purchase of property, plant, and equipment	(3,394)	(516)
Purchase of patents and trademarks	(67)	(103)
Acquisition of certain assets of The C-Thru Ruler Company		(1,474)
Proceeds from the sale of building	1,727
Net cash used by investing activities	(1,734)	(2,093)
Financing Activities:
Borrowing of long-term debt	711	6,752
Proceeds from issuance of common stock	508	21
Distributions to stockholders	(473)	(654)
Purchase of treasury stock		(370)
Net cash provided by financing activities	746	5,749
Effect of exchange rate changes	(14)	70
Net change in cash and cash equivalents	2,059	2,252
Cash and cash equivalents at beginning of period	9,750	7,853
Cash and cash equivalents at end of period	$ 11,809	$ 10,105