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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Statement of Cash Flows [Abstract]
Income Taxes Paid	$ 259	$ 1,101
Operating activities:
Net income	5,453	4,430
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	2,933	3,365
Stock-based compensation	5,247	1,057
Deferred income taxes	1,591	1,380
Changes in operating assets and liabilities:
Accounts receivable	(7,974)	(4,632)
Inventories	(1,882)	(682)
Prepaid expenses and other assets	(1,629)	(1,563)
Accounts payable and other liabilities	(6,406)	(1,745)
Other	434	238
Net cash (used in) provided by operating activities	(2,233)	1,848
Investing activities:
Purchases of property, plant and equipment	(944)	(1,428)
Business acquisition	0	(157)
Net cash used in investing activities	(944)	(1,585)
Financing activities:
Net (payments on) proceeds from revolving lines of credit	(2,000)	1,528
Payment of financing lease principal	(123)	0
Proceeds from stock option exercises	16	0
Net cash (used in) provided by financing activities	(2,107)	1,528
Effect of exchange rate changes on cash and cash equivalents	316	(215)
Increase (decrease) in cash, cash equivalents and restricted cash	(4,968)	1,576
Cash, cash equivalents and restricted cash at beginning of period	12,683	5,216
Cash, cash equivalents and restricted cash at end of period	7,715	6,792
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 12,683	$ 5,216

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