INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of provision for income taxes

	2015			2014			2013
Current:
Federal	$	5,778		$	5,953		$	3,960
State		913			707			415
Foreign		1,623			1,853			1,025
		8,314			8,513			5,400
Deferred:
Federal		548			283			(238	)
State		47			32			(28	)
Foreign		(22	)		(168	)		41
		573			147			(225	)
	$	8,887		$	8,660		$	5,175

Schedule of effective income tax rate reconciliation

	2015			2014			2013
Federal statutory tax rate		35.0	%		35.0	%		35.0	%
State taxes, net of federal tax benefit		3.0	%		3.7	%		3.7	%
Excess of (decreases in) foreign tax over US tax on foreign income		(1.1	)%		0.1	%		0.3	%
Domestic Tax Credits		(1.2	)%		(1.4	)%		(1.5	)%
Other		0.0	%		(0.5	)%		(0.2	)%
Effective tax rate		35.7	%		36.9	%		37.3	%

Schedule of deferred income tax assets and liabilities

	2015		2014
Deferred tax assets:
Allowance for doubtful accounts	$	78	$	94
Accruals and reserves		3,468		3,767
Other		179		222
Total deferred tax assets		3,725		4,083
Deferred tax liabilities:
Property, plant, and equipment		2,499		2,184
Total deferred tax liabilities		2,499		2,184
Net deferred tax asset	$	1,226	$	1,899