SUPPLEMENTAL BALANCE SHEET INFORMATION

Cash

The composition of the Company’s cash was as follows:

	June 30,		December 31,
	2019		2018
Cash	$	6,528	$	25,583
Restricted cash		288		351
Total	$	6,816	$	25,934

As of

June 30, 2019

and

December 31, 2018,

restricted cash included

$205

and

$266,

respectively, relating to a government grant awarded in the People’s Republic of China to fund specified technological research and development initiatives. The grant proceeds are realized to income as a direct offset to expense as the related expenditures are incurred. For the

six

-month period ended

June 30, 2019,

grant proceeds of

$61

were realized to income. As of

June 30, 2019

and

December 31, 2018,

restricted cash included euro-denominated deposits of

$83

and

$85,

respectively, withheld by the Dutch tax authorities and

third

-party VAT representatives in connection with a previously utilized logistics arrangement in the Netherlands. Restricted cash is included as a component of the cash balance for purposes of the consolidated statements of cash flows.

Inventories

Inventories are stated at the lower of cost or market, net of obsolescence reserves, with cost determined under the

first

-in,

first

-out (FIFO) method. The composition of inventories, net was:

	June 30,		December 31 ,
	2019		2018
Raw materials	$	18,379	$	13,274
Work in process		2,679		2,016
Finished goods		13,257		7,553
Total	$	34,315	$	22,843

Property, Equipment and Improvements, Net

Major classes of property, equipment and improvements consisted of the following:

	June 30,			December 31,
	201 9			201 8
Land	$	1,273		$	123
Buildings and leasehold improvements		15,285			8,267
Machinery and equipment		53,774			51,261
Furniture and fixtures		2,177			2,058
Computer hardware and software		6,120			5,590
Construction in process		5,036			4,302
		83,665			71,601
Less: Accumulated depreciation		(61,587	)		(60,857	)
Property, equipment and improvements, net	$	22,078		$	10,744

Depreciation expense for property, equipment and improvements was as follows:

	Three-month period ended				Six-month period ended
	June 30,		July 1,		June 30,		July 1,
	2019		2018		2019		2018
Depreciation expense	$	515	$	496	$	962	$	980

Goodwill

The following table summarizes the goodwill activity by segment for the

six

-month periods ended

June 30, 2019

and

July 1, 2018:

	Battery & Energy			Communi- cations
	Products			Systems		Total
Balance - December 31, 2017	$	8,965		$	11,493	$	20,458
Effect of foreign currency translation		(136	)		-		(136	)
Balance – July 1, 2018		8,829			11,493		20,322
Effect of foreign currency translation		(213	)		-		(213	)
Balance - December 31, 2018		8,616			11,493		20,109
Acquisition of SWE		6,474			-		6,474
Effect of foreign currency translation		(9	)		-		(9	)
Balance – June 30, 2019	$	15,081		$	11,493	$	26,574

Other Intangible Assets, Net

The composition of other intangible assets was:

	at June 30 , 2019
			Accumulated
	Cost		Amortization		Net
Trademarks	$	3,405	$	-	$	3,405
Customer relationships		8,986		4,509		4,477
Patents and technology		5,483		4,789		694
Distributor relationships		377		377		-
Trade name		1,497		141		1,356
Total	$	19,748	$	9,816	$	9,932

	at December 31, 201 8
			Accumulated
	Cost		Amortization		Net
Trademarks	$	3,405	$	-	$	3,405
Customer relationships		6,471		4,392		2,079
Patents and technology		5,486		4,725		761
Distributor relationships		377		377		-
Trade name		370		111		259
Total	$	16,109	$	9,605	$	6,504

The increase in the carrying value of other intangible assets from

December 31, 2018

June 30, 2019

reflects the preliminary valuation of identifiable intangible assets acquired in the Company’s acquisition of SWE. The table below summarizes the estimated fair value, useful life and annual amortization for the identifiable intangible assets resulting from the preliminary valuation analysis. Amortization for the SWE intangible assets is recognized as selling, general and administrative expense.

					Annual
			Estimated		Estimated
	Estimated Fair		Useful Lives		Amortization
	Value		in Years		Expense
Customer relationships	$	2,522		15	$	168
Trade name		1,127		15		75
Total	$	3,649			$	243

The remaining change in the carrying value of other intangible assets from

December 31, 2018

June 30, 2019

is the result of the effect of foreign currency translations.

Amortization expense for other intangible assets was as follows:

	Three-month period ended				Six-month period ended
	June 30,		July 1,		June 30,		July 1,
	2019		2018		2019		2018
Amortization included in:
Research and development	$	33	$	37	$	66	$	75
Selling, general and administrative		99		64		158		128
Total amortization expense	$	132	$	101	$	224	$	203