Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 23,561	$ 50,122
Trade and other accounts receivable, net of allowance for doubtful accounts of $4 and $36 as of September 30, 2018 and December 31, 2017, respectively	30,022	31,643
Inventories	39,621	32,228
Prepaid expenses and other current assets	4,119	2,983
Total current assets	97,323	116,976
Property and equipment, net	31,308	28,044
Intangible assets, net	10,344	11,715
Goodwill	35,464	36,061
Pension asset	11,949	11,712
Other non-current assets	730	871
Total assets	187,118	205,379
Current liabilities:
Accounts payable and accrued liabilities	18,870	32,758
Accrued employee compensation	7,244	9,070
Deferred revenue and customer deposits	4,101	6,669
Short-term borrowings and current portion of long-term debt	34	33
Total current liabilities	30,249	48,530
Deferred tax liability, long-term	7,831	8,762
Long-term debt, excluding current portion	36,454	35,124
Defined benefit plan liability	4,109	3,942
Other long-term liabilities	2,356	2,920
Total liabilities	80,999	99,278
Commitments and contingencies (Note 13)
Stockholders’ equity:
Common stock, $0.10 par value per share, 80,000,000 shares authorized at September 30, 2018 and December 31, 2017; 45,867,418 and 37,199,519 shares issued and outstanding at September 30, 2018 and December 31, 2017, respectively	4,584	3,717
Additional paid-in capital	368,044	337,541
Accumulated deficit	(277,185)	(247,233)
Accumulated other comprehensive income	10,676	12,076
Total stockholders’ equity	106,119	106,101
Total liabilities and stockholders’ equity	$ 187,118	$ 205,379

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.