Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities:
Net income	$ 3,832	$ 3,146
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation	717	641
Amortization	455	383
Stock compensation expense	184	304
Changes in operating assets and liabilities:
Accounts receivable	(13,898)	(7,698)
Inventories	(2,432)	(3,010)
Prepaid expenses and other assets	(329)	(508)
Accounts payable	4,856	1,766
Other accrued liabilities	993	(607)
Total adjustments	(9,454)	(8,729)
Net cash used by operating activities	(5,622)	(5,583)
Investing Activities:
Purchase of property, plant, and equipment	(752)	(867)
Purchase of patents and trademarks	(29)	(3)
Acquisition of certain assets of Diamond Machining Technology	(6,971)
Net cash used by investing activities	(7,752)	(870)
Financing Activities:
Borrowing of long-term debt	14,908	6,033
Cash settlement of stock options	(681)
Proceeds from issuance of common stock	390	675
Distributions to stockholders	(668)	(595)
Purchase of treasury stock	(907)
Net cash provided by financing activities	13,042	6,113
Effect of exchange rate changes on cash	(7)	(5)
Net change in cash and cash equivalents	(339)	(345)
Cash and cash equivalents at beginning of period	2,426	2,286
Cash and cash equivalents at end of period	$ 2,087	$ 1,941