Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The cumulative effect to the Company’s consolidated January 1, 2018 balance sheet from the adoption of the new revenue standard was as follows (in thousands):

Balance Sheet	Balance at December 31, 2017			Adjustments Due to ASC 606			Balance at January 1, 2018
Assets:
Trade and other accounts receivable, net of allowance	$	31,643		$	227		$	31,870
Inventories	32,228			(430		)	31,798
Liabilities and Stockholders’ Equity:
Accounts payable and accrued liabilities	32,758			37			32,795
Deferred revenue and customer deposits	6,669			(518		)	6,151
Accumulated deficit	(247,233		)	278			(246,955		)

Disaggregation of Revenue

The following tables disaggregate the Company’s revenue by product line and by shipment destination:

	Three Months Ended June 30,		Six Months Ended June 30,
Product Line:	2018		2018
Energy Storage	$	22,705	$	45,707
High-Voltage Capacitors	6,759		12,173
Total	$	29,464	$	57,880

	Three Months Ended June 30,		Six Months Ended June 30,
Region:	2018		2018
Americas	$	4,085	$	9,903
Asia Pacific	14,717		24,544
Europe	10,662		23,433
Total	$	29,464	$	57,880

Contract with Customer, Asset and Liability

Changes in the Company’s contract liabilities, which are included in “deferred revenue and customer deposits” in the Company’s condensed consolidated balance sheets, are as follows:

	Six Months Ended June 30,
	2018
Beginning balance as of December 31, 2017	$	5,331
Impact of adoption of ASC 606	(518		)
Increases due to cash received from customers	1,335
Decreases due to recognition of revenue	(2,623		)
Other changes	(200		)
Contract liabilities as of June 30, 2018	$	3,325