SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Schedule of inventories, net of reserves

	2013		2012
Chassis	$	7,665	$	9,952
Raw materials		25,772		18,856
Work in process		9,915		7,961
Finished goods		10,820		8,276
	$	54,172	$	45,045

Schedule of property, plant and equipment

	2013			2012
Land and improvements	$	5,031		$	4,887
Buildings and improvements		32,759			33,498
Machinery and equipment		29,664			26,959
Furniture and fixtures		8,556			8,242
Software costs		7,533			7,381
		83,543			80,967
Less accumulated depreciation		(52,709	)		(48,779	)
	$	30,834		$	32,188

Schedule of accrued liabilities

	2013		2012
Accrued wages, commissions, bonuses and benefits	$	4,991	$	4,819
Accrued products warranty		3,084		4,357
Accrued income taxes		2,995		57
Other		4,656		3,125
	$	15,726	$	12,358

Schedule of product warranty liability

	2013			2012
Accrual at beginning of the year	$	4,357		$	5,322
Provision		1,086			901
Settlement and Other		(2,359	)		(1,866	)
Accrual at end of year	$	3,084		$	4,357