SEGMENT INFORMATION (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Number of operating segments	2
Information about net income, segment assets, and certain other items [Abstract]
Net outside sales	$ 437,367,000	$ 307,822,000	$ 278,232,000
Intersegment sales	17,837,000	12,160,000	11,866,000
Total Sales	455,204,000	319,982,000	290,098,000
Cost of goods sold	371,623,000	263,514,000	248,594,000
Operating income	27,040,000	13,475,000	6,406,000
Identifiable assets	143,469,000	85,770,000	74,817,000
Depreciation and amortization	5,586,000	4,916,000	4,970,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated net sales	437,367,000	307,822,000	278,232,000
Consolidated cost of goods sold	371,623,000	263,514,000	248,594,000
Consolidated operating income	27,040,000	13,475,000	6,406,000
Consolidated total assets	143,469,000	85,770,000	74,817,000
Consolidated depreciation and amortization	5,586,000	4,916,000	4,970,000
Intangible assets amortization expense	1,523,000	829,000	564,000
RV Customer 1 [Member]
Major Customers [Line Items]
Percentage of trade receivables balance (in hundredths)	30.00%	34.00%
Percentage of consolidated net sales (in hundredths)	34.00%	32.00%	27.00%
RV Customer 2 [Member]
Major Customers [Line Items]
Percentage of consolidated net sales (in hundredths)	20.00%	17.00%	18.00%
Manufacturing [Member]
Segment Reporting Information [Line Items]
Percentage of net sales contributed by segment (in hundredths)	76.00%	76.00%	80.00%
Information about net income, segment assets, and certain other items [Abstract]
Net outside sales	330,941,000	232,460,000	222,909,000
Intersegment sales	16,007,000	11,800,000	11,632,000
Total Sales	346,948,000	244,260,000	234,541,000
Cost of goods sold	296,641,000	210,797,000	212,954,000
Operating income	30,798,000	18,805,000	7,873,000
Identifiable assets	85,523,000	50,139,000	39,414,000
Depreciation and amortization	3,851,000	3,553,000	3,618,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated cost of goods sold	296,641,000	210,797,000	212,954,000
Consolidated operating income	30,798,000	18,805,000	7,873,000
Consolidated total assets	85,523,000	50,139,000	39,414,000
Consolidated depreciation and amortization	3,851,000	3,553,000	3,618,000
Intangible assets amortization expense	1,231,000	598,000	503,000
Distribution [Member]
Segment Reporting Information [Line Items]
Percentage of net sales contributed by segment (in hundredths)	24.00%	24.00%	20.00%
Information about net income, segment assets, and certain other items [Abstract]
Net outside sales	106,426,000	75,362,000	55,323,000
Intersegment sales	1,830,000	360,000	234,000
Total Sales	108,256,000	75,722,000	55,557,000
Cost of goods sold	90,155,000	63,636,000	47,235,000
Operating income	5,727,000	2,689,000	1,364,000
Identifiable assets	25,745,000	16,446,000	13,587,000
Depreciation and amortization	399,000	330,000	199,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated cost of goods sold	90,155,000	63,636,000	47,235,000
Consolidated operating income	5,727,000	2,689,000	1,364,000
Consolidated total assets	25,745,000	16,446,000	13,587,000
Consolidated depreciation and amortization	399,000	330,000	199,000
Intangible assets amortization expense	292,000	231,000	61,000
Reportable Segment [Member]
Information about net income, segment assets, and certain other items [Abstract]
Net outside sales	437,367,000	307,822,000	278,232,000
Total Sales	455,204,000	319,982,000	290,098,000
Cost of goods sold	386,796,000	274,433,000	260,189,000
Operating income	36,525,000	21,494,000	9,237,000
Identifiable assets	111,268,000	66,585,000	53,001,000
Depreciation and amortization	4,250,000	3,883,000	3,817,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated net sales	455,204,000	319,982,000	290,098,000
Consolidated cost of goods sold	386,796,000	274,433,000	260,189,000
Consolidated operating income	36,525,000	21,494,000	9,237,000
Consolidated total assets	111,268,000	66,585,000	53,001,000
Consolidated depreciation and amortization	4,250,000	3,883,000	3,817,000
Intersegment Elimination [Member]
Information about net income, segment assets, and certain other items [Abstract]
Cost of goods sold	(17,837,000)	(12,160,000)	(11,866,000)
Identifiable assets	0	0	0
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated net sales	(17,837,000)	(12,160,000)	(11,866,000)
Consolidated cost of goods sold	(17,837,000)	(12,160,000)	(11,866,000)
Consolidated total assets	0	0	0
Consolidation Reclassification [Member]
Information about net income, segment assets, and certain other items [Abstract]
Cost of goods sold	1,041,000	(89,000)	(175,000)
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated cost of goods sold	1,041,000	(89,000)	(175,000)
Corporate Incentive Agreements [Member]
Information about net income, segment assets, and certain other items [Abstract]
Cost of goods sold	(491,000)	(73,000)	(269,000)
Operating income	491,000	73,000	269,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated cost of goods sold	(491,000)	(73,000)	(269,000)
Consolidated operating income	491,000	73,000	269,000
Other [Member]
Information about net income, segment assets, and certain other items [Abstract]
Cost of goods sold	2,114,000	1,403,000	715,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated cost of goods sold	2,114,000	1,403,000	715,000
Gain on Sale of Fixed Assets and Acquisition of Business [Member]
Information about net income, segment assets, and certain other items [Abstract]
Operating income	238,000	244,000	2,866,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated operating income	238,000	244,000	2,866,000
Unallocated Amount to Segment [Member]
Information about net income, segment assets, and certain other items [Abstract]
Operating income	(8,691,000)	(7,507,000)	(5,402,000)
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated operating income	(8,691,000)	(7,507,000)	(5,402,000)
Amortization [Member]
Information about net income, segment assets, and certain other items [Abstract]
Operating income	(1,523,000)	(829,000)	(564,000)
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated operating income	(1,523,000)	(829,000)	(564,000)
Corporate Property and Equipment [Member]
Information about net income, segment assets, and certain other items [Abstract]
Identifiable assets	22,025,000	14,769,000	14,649,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated total assets	22,025,000	14,769,000	14,649,000
Current Assets not Allocated to Segments [Member]
Information about net income, segment assets, and certain other items [Abstract]
Identifiable assets	7,028,000	1,844,000	3,517,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated total assets	7,028,000	1,844,000	3,517,000
Intangibles and Other Assets not Allocated to Segments [Member]
Information about net income, segment assets, and certain other items [Abstract]
Identifiable assets	3,148,000	2,572,000	3,650,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated total assets	3,148,000	2,572,000	3,650,000
Corporate [Member]
Information about net income, segment assets, and certain other items [Abstract]
Depreciation and amortization	1,336,000	1,033,000	1,153,000
Reconciliation of certain line items pertaining to total reportable segments to consolidated financial statements [Abstract]
Consolidated depreciation and amortization	$ 1,336,000	$ 1,033,000	$ 1,153,000