SELECTED QUARTERLY FINANCIAL DATA - Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including non-controlling interest	$ 1,487	$ 135	$ 3,803	$ 3,216	$ 6,142	$ 6,448	$ 2,567	[1]	$ 6,551	[1]	$ 10,775	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Loss (income) from discontinued operations, net of tax	316	93	97	(217)	77	(473)	77		(478)		(943)
Gain on sale of discontinued operations, net of tax							(718)		0		0
Depreciation (including capital lease amortization)	1,624	1,272	3,379	2,583	5,204	4,004	7,051		5,920		5,018
Amortization of purchased intangible assets	1,616	1,585	3,232	3,153	4,808	4,734	6,103		6,348		6,210
Amortization of deferred debt issuance costs	25	25	51	51	76	76	102		102		124
Stock-based compensation	717	1,422	1,741	2,057	2,704	2,685	3,588		3,401		4,443
Deferred income tax benefit	670	303	848	776	255	892	(255)		(521)		(470)
Loss on disposal of property, plant and equipment		21	5	21	6	5	12		50		0
Change in:
Accounts receivable, net	1,570	2,784	(858)	(5,193)	5,342	4,868	(427)		(2,185)		717
Inventory, net	(2,459)	619	(5,000)	1,960	(2,732)	6,588	(3,459)		6,750		(2,380)
Prepaid expenses and other	(1,867)	(952)	(2,873)	(545)	(3,413)	1,031	(3,004)		89		551
Accounts payable	(1,051)	(596)	(4,778)	3,105	(5,084)	(2,208)	(932)		2,228		(3,616)
Customer advances	1,980	55	1,613	3,434	1,445	21	2,782		(360)		(556)
Accrued expenses and other liabilities	(1,151)	(981)	(586)	344	810	1,145	3,267		1,588		(409)
Net cash flows provided by continuing operations	3,477	5,785	674	14,745	15,640	29,816	23,074		30,239		19,464
Net cash flows provided by discontinued operations	(298)	559	48	680	239	655	239		1,777		1,092
Net cash provided by operating activities	3,179	6,344	722	15,425	15,879	30,471	23,313		32,016		20,556
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(1,994)	(4,366)	(4,123)	(9,301)	(6,472)	(13,426)	(21,403)		(16,223)		(15,133)
Change in other non-current assets	32	45	(59)	192	373	209	1,310		(489)		(224)
Net cash flows used in continuing operations	(1,962)	(4,321)	(4,182)	(9,109)	(6,099)	(13,217)	(13,263)		(16,892)		(25,651)
Net cash flows used in discontinued operations	(63)	(87)	(85)	(425)	(120)	(604)	(120)		(1,348)		(514)
Net cash used in investing activities	(2,025)	(4,408)	(4,267)	(9,534)	(6,219)	(13,821)	(13,383)		(18,240)		(26,165)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings (repayments) on bank lines of credit, net	(1,863)	(202)	2,555	(9,811)	(3,213)	(13,252)	(6,069)		(9,592)		12,174
Payment on loans with former owners of LRI	(15)	(16)	(31)	(32)	(47)	(47)	(50)		(63)		(1,176)
Payment on capital lease obligations	(15)	(13)	(22)	(25)	(23)	(39)	(24)		(40)		(66)
Payment of dividends	(550)	(540)	(1,108)	(1,088)	(1,667)	(1,637)	(2,226)		(2,187)		(2,155)
Net proceeds from issuance of common stock to employees and directors	22		234	163	234	163
Excess tax benefit from stock-based compensation	26	(890)	51	(836)	52	(895)	156		0		0
Net cash provided by (used in) financing activities	(2,395)	(1,661)	1,679	(11,629)	(4,664)	(15,707)	(7,854)		(11,587)		8,517
EFFECTS OF EXCHANGE RATES ON CASH	(226)	(247)	(89)	(112)	(662)	172	(3,274)		191		(8)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(1,467)	28	(1,955)	(5,850)	4,334	1,115	(1,198)		2,380		2,900
CASH AND CASH EQUIVALENTS, beginning of the period	10,598	8,218	10,598	8,218	10,598	8,218	10,598		8,218		5,318
CASH AND CASH EQUIVALENTS, end of the period	9,131	8,246	8,643	2,368	14,932	9,333	9,400		10,598		8,218
As Reported
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including non-controlling interest	1,638	243	4,525	3,698	7,021	7,308			7,587		11,694
Adjustments to reconcile net income to net cash provided by operating activities:
Loss (income) from discontinued operations, net of tax	316	93	97	(217)	77	(473)			(478)		(943)
Depreciation (including capital lease amortization)	1,826	1,272	3,581	2,583	5,406	4,004			5,920		5,018
Amortization of purchased intangible assets	1,616	1,585	3,232	3,153	4,808	4,734			6,348		6,210
Amortization of deferred debt issuance costs	25	25	51	51	76	76			102		124
Stock-based compensation	555	1,422	1,591	2,057	2,565	2,685			3,401		4,443
Deferred income tax benefit	612	130	72	229	(608)	(126)			(1,666)		(1,159)
Loss on disposal of property, plant and equipment		21	5	21	6	5			50
Change in:
Accounts receivable, net	1,570	2,784	(858)	(5,193)	5,342	4,868			(2,185)		717
Inventory, net	(2,513)	619	(5,000)	1,960	(3,012)	6,588			6,750		(2,380)
Prepaid expenses and other	(1,867)	(952)	(2,873)	(545)	(3,146)	1,031			79		463
Accounts payable	(1,051)	(596)	(4,778)	3,105	(5,084)	(2,208)			2,228		(3,616)
Customer advances	1,980	55	1,613	3,434	1,445	21			(360)		(556)
Accrued expenses and other liabilities	(1,291)	(916)	(645)	409	683	1,303			1,707		(551)
Net cash flows provided by continuing operations	3,416	5,785	613	14,745	15,579	29,816			30,239		19,464
Net cash flows provided by discontinued operations	(298)	559	48	680	239	655			1,777		1,092
Net cash provided by operating activities	3,118	6,344	661	15,425	15,818	30,471			32,016		20,556
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(1,994)	(4,366)	(4,123)	(9,301)	(6,472)	(13,426)			(16,223)		(15,133)
Change in other non-current assets	32	45	(59)	192	373	209			(489)		(224)
Net cash flows used in continuing operations	(1,962)	(4,321)	(4,182)	(9,109)	(6,099)	(13,217)			(16,892)		(25,651)
Net cash flows used in discontinued operations	(63)	(87)	(85)	(425)	(120)	(604)			(1,348)		(514)
Net cash used in investing activities	(2,025)	(4,408)	(4,267)	(9,534)	(6,219)	(13,821)			(18,240)		(26,165)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings (repayments) on bank lines of credit, net	(1,863)	(202)	2,555	(9,811)	(3,213)	(13,252)			(9,592)		12,174
Payment on loans with former owners of LRI	(15)	(16)	(31)	(32)	(47)	(47)			(63)		(1,176)
Payment on capital lease obligations	(15)	(13)	(22)	(25)	(23)	(39)			(40)		(66)
Payment of dividends	(550)	(540)	(1,108)	(1,088)	(1,667)	(1,637)			(2,187)		(2,155)
Net proceeds from issuance of common stock to employees and directors	22		234	163	234	163
Excess tax benefit from stock-based compensation	87	(890)	112	(836)	113	(895)
Net cash provided by (used in) financing activities	(2,334)	(1,661)	1,740	(11,629)	(4,603)	(15,707)			(11,587)		8,517
EFFECTS OF EXCHANGE RATES ON CASH	(226)	(247)	(89)	(112)	(662)	172			191		(8)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(1,467)	28	(1,955)	(5,850)	4,334	1,115			2,380		2,900
CASH AND CASH EQUIVALENTS, beginning of the period	10,598	8,218	10,598	8,218	10,598	8,218	10,598		8,218		5,318
CASH AND CASH EQUIVALENTS, end of the period	9,131	8,246	8,643	2,368	14,932	9,333			10,598		8,218
Adjustments
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including non-controlling interest	(151)	(108)	(722)	(482)	(879)	(860)			(1,036)		(919)
Adjustments to reconcile net income to net cash provided by operating activities:
Loss (income) from discontinued operations, net of tax	0	0	0	0	0	0			0		0
Depreciation (including capital lease amortization)	(202)	0	(202)	0	(202)	0			0		0
Amortization of purchased intangible assets	0	0	0	0	0	0			0		0
Amortization of deferred debt issuance costs	0	0	0	0	0	0			0		0
Stock-based compensation	162	0	150	0	139	0			0		0
Deferred income tax benefit	58	173	776	547	863	1,018			1,145		689
Loss on disposal of property, plant and equipment		0	0	0	0	0			0
Change in:
Accounts receivable, net	0	0	0	0	0	0			0		0
Inventory, net	54	0	0	0	280	0			0		0
Prepaid expenses and other	0	0	0	0	(267)	0			10		88
Accounts payable	0	0	0	0	0	0			0		0
Customer advances	0	0	0	0	0	0			0		0
Accrued expenses and other liabilities	140	(65)	59	(65)	127	(158)			(119)		142
Net cash flows provided by continuing operations	61	0	61	0	61	0			0		0
Net cash flows provided by discontinued operations	0	0	0	0	0	0			0		0
Net cash provided by operating activities	61	0	61	0	61	0			0		0
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	0	0	0	0	0	0			0		0
Change in other non-current assets	0	0	0	0	0	0			0		0
Net cash flows used in continuing operations	0	0	0	0	0	0			0		0
Net cash flows used in discontinued operations	0	0	0	0	0	0			0		0
Net cash used in investing activities	0	0	0	0	0	0			0		0
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings (repayments) on bank lines of credit, net	0	0	0	0	0	0			0		0
Payment on loans with former owners of LRI	0	0	0	0	0	0			0		0
Payment on capital lease obligations	0	0	0	0	0	0			0		0
Payment of dividends	0	0	0	0	0	0			0		0
Net proceeds from issuance of common stock to employees and directors	0		0	0	0	0
Excess tax benefit from stock-based compensation	(61)	0	(61)	0	(61)	0
Net cash provided by (used in) financing activities	(61)	0	(61)	0	(61)	0			0		0
EFFECTS OF EXCHANGE RATES ON CASH	0	0	0	0	0	0			0		0
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	0	0	0	0	0	0			0		0
CASH AND CASH EQUIVALENTS, beginning of the period	0	0	0	0	0	0	0		0		0
CASH AND CASH EQUIVALENTS, end of the period	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0			$ 0		$ 0

[1] Restated