FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
 12 Months Ended
Dec. 31, 2015
Fair Value Disclosures [Abstract]  
Schedule of carrying amount, fair values and classification of financial instruments measured or disclosed at fair value on a recurring basis
The following table presents the carrying amount, fair values, and classification level within the fair value hierarchy of financial instruments measured or disclosed at fair value on a recurring basis (in thousands):
 
December 31, 2015
 
December 31, 2014
 
Level of Fair Value Hierarchy
 
Carrying Amount
 
Fair Value
 
Carrying Amount
 
Fair Value
 
Assets:
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
$
32,774

 
$
32,774

 
$
16,293

 
$
16,293

 
Level 1
Restricted cash
2,192

 
2,192

 
3,151

 
3,151

 
Level 1
Foreign currency forward contracts
163

 
163

 
307

 
307

 
Level 2
Liabilities:
 
 
 
 
 
 
 
 
 
Variable interest rate debt
11,771

 
11,771

 
16,225

 
16,225

 
Level 2
Foreign currency forward contracts
418

 
418

 
629

 
629

 
Level 2
Schedule of fair value on the Consolidated Balance Sheets of the foreign currency forward contracts
The following table presents the fair value on the Consolidated Balance Sheets of the foreign currency forward contracts (in thousands):
 
December 31,
2015
 
December 31,
2014
Foreign currency forwards designated as hedges:
 

 
 

Other current assets
$
114

 
$
237

Accrued expenses
(196
)
 
(385
)
Foreign currency forwards not designated as hedges:
 

 
 

Other current assets
49

 
70

Accrued expenses
(222
)
 
(244
)
Foreign currency forwards, net
$
(255
)
 
$
(322
)
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]
The fair value measurements for the acquired intangible assets were calculated using discounted cash flow analysis which rely upon significant unobservable Level 3 inputs which include the following:
Unobservable inputs
 
Range
Discount rate
 
19.0
%
-
22.0%
Royalty rate
 
2.0
%
-
3.0%
Long term growth rate
 
3.0%
Schedule of Allocation of Plan Assets [Table Text Block]
The fair values and classification of the defined benefit plan assets is as follows (in thousands):
    
 
December 31, 2015
 
Total
 
Level 1
 
Level 2
 
Level 3
Growth funds(1)
$
37,472

 
$
37,472

 
$
—

 
$
—

Income funds(2)
23,401

 
23,401

 
—

 
—

Growth and income funds(3)
83,247

 
—

 
83,247

 
—

Hedge funds(4)
27,071

 
—

 
—

 
27,071

Real estate funds
3,246

 
769

 
2,477

 
—

Other assets
1,514

 
582

 
932

 
—

Cash and cash equivalents
4,056

 
4,056

 
—

 
—

Total
$
180,007

 
$
66,280

 
$
86,656

 
$
27,071

     
 
December 31, 2014
 
Total
 
Level 1
 
Level 2
 
Level 3
Growth funds(1)
$
43,676

 
$
43,676

 
$
—

 
$
—

Income funds(2)
25,800

 
25,800

 
—

 
—

Growth and income funds(3)
81,301

 
—

 
81,301

 
—

Hedge funds(4)
27,820

 
—

 
—

 
27,820

Real estate funds
3,100

 
707

 
2,393

 
—

Other assets
1,401

 
602

 
799

 
—

Cash and cash equivalents
2,883

 
2,883

 
—

 
—

Total
$
185,981

 
$
73,668

 
$
84,493

 
$
27,820

____________________
(1)    Growth funds represent a type of fund containing a diversified portfolio of domestic and international equities with a goal of capital appreciation.

(2)    Income funds represent a type of fund with an emphasis on current income as opposed to capital appreciation. Such funds may contain a variety of domestic and international government and corporate debt obligations, preferred stock, money market instruments and dividend-paying stocks.

(3)    Growth and income funds represent a type of fund containing a combination of growth and income securities.

(4)    Hedge funds represent a managed portfolio of investments that use advanced investment strategies such as leveraged, long, short and derivative positions in both domestic and international markets with the goal of generating high returns. These funds are subject to quarterly redemptions and advanced notification requirements, as well as the right to delay redemption until sufficient fund liquidity exists.
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

A summary of the changes in the fair value of the defined benefit plans assets classified within Level 3 of the valuation hierarchy is as follows (in thousands):
    
 
Year Ended 
 December 31,
 
2015
 
2014
Balance at beginning of year
$
27,820

 
$
25,624

Purchases
1,750

 
1,500

Sales and settlements
(2,300
)
 
(420
)
Unrealized (losses) gains
(199
)
 
1,117

Realized (losses)
—

 
(1
)
Balance at end of year
$
27,071

 
$
27,820