INCOME TAXES - Tax Effects (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of components of income before income taxes
Domestic	$ 7,676	$ 9,484	$ 1,406
Foreign	7,745	9,139	4,375
Income before income taxes	15,421	18,623	5,781
Current provision
Domestic	1,936	1,917	1,179
Foreign	1,042	1,126	898
Total current provision	2,978	3,043	2,077
Deferred provision
Domestic	1,217	1,297	(197)
Foreign	152	423	(52)
Total deferred provision	1,369	1,720	(249)
Provision for income taxes	$ 4,347	$ 4,763	$ 1,828
Differences in the provision for income taxes from the amount determined by applying the federal statutory rate
Tax provision, computed at statutory rate (as a percent)	34.00%	34.00%	34.00%
State tax, net of federal impact (as a percent)	4.80%	0.60%	3.70%
Change in valuation allowance (as a percent)	(3.30%)	(4.70%)
Effect of foreign tax rate differences (as a percent)	(6.10%)	(4.50%)	(9.70%)
Permanent items, other (as a percent)	(0.40%)	(1.20%)	(0.30%)
Other (as a percent)	(0.80%)	1.40%	3.90%
Provision for income taxes (as a percent)	28.20%	25.60%	31.60%
Current deferred tax assets:
Allowances and other	$ 977	$ 863
Net operating loss and tax credit carryforwards	1,045	2,189
Total current deferred tax assets	2,022	3,052
Valuation allowance	(439)	(1,164)
Net current deferred tax assets	1,583	1,888
Noncurrent deferred tax assets:
Employee benefit plans	2,719	2,563
Goodwill and Intangibles	215	1,019
Other	582	582
Total noncurrent deferred tax assets	3,516	4,164
Deferred tax liabilities:
Depreciation and Amortization	2,857	2,401
Other	324	339
Total deferred tax liabilities	$ 3,181	$ 2,740