CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
CASH FLOWS PROVIDED BY (USED IN) OPERATING ACTIVITIES:
Net income (loss)	$ 5,519	$ 1,599	$ (939)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization	4,187	3,712	2,497
Deferred tax (benefit) expense	1,327	1,304	(637)
Stock based compensation	2,269	1,653	408
Unrealized (gain) loss on foreign currency translation	36	(81)	20
Changes in operating assets and liabilities:
Accounts receivable	(4,216)	(510)	(159)
Inventories	(7,240)	(5,592)	(1,687)
Other current assets	(238)	(73)	(642)
Accounts payable	3,059	900	(2,276)
Accrued liabilities and other	43	814	(130)
Other non-current assets	(2,430)	(263)	(179)
Deferred revenue and other	(191)	2,091	2,312
Net cash provided by (used in) operating activities	2,125	5,554	(1,412)
CASH FLOWS PROVIDED BY (USED IN) INVESTING ACTIVITIES:
Investment in subsidiary	0	0	(3,019)
Purchases of property and equipment	(3,773)	(2,337)	(1,930)
Proceeds from disposition of property and equipment	0	6	5,020
Net cash provided by (used in) investing activities	(3,773)	(2,331)	71
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES:
Proceeds from issuance of common stock, net of distributions	1,258	1,430	323
Proceeds from (repayments of) line of credit borrowings, net	95	(4,751)	2,246
Proceeds from other debt	(141)	(178)	(1,025)
Excess tax benefit from stock-based compensation	1,514	228	15
Net cash provided by (used in) financing activities	2,726	(3,271)	1,559
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(43)	(113)	14
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,035	(161)	232
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	5,855	6,016	5,784
CASH AND CASH EQUIVALENTS, END OF YEAR	$ 6,890	$ 5,855	$ 6,016