Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Operating activities
Net income (loss)		$ 1,819	$ (2,048)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Impairment		0	1,401
Depreciation and amortization		2,131	2,157
Debt issuance costs amortization		15	32
Deferred income taxes		113	143
(Gain) loss on sale of assets		(63)	(2)
Unrealized foreign currency transaction loss (gain)		137	(387)
Changes in operating assets and liabilities:
Accounts receivable		1,021	9,786
Inventories		(2,963)	(8,208)
Other assets		323	(3,287)
Accounts payable		734	1,056
Customer deposits		91	2,887
Accrued expenses		(7,056)	(4,823)
Accrued pension and postretirement liabilities		(124)	(14)
Net cash used in operating activities		(3,822)	(1,307)
Investing activities
Capital expenditures		(1,417)	(480)
Proceeds from sales of assets		63	3
Net cash used in investing activities		(1,354)	(477)
Financing activities
Proceeds from short-term notes payable to bank		2,454	7,535
Repayments of short-term notes payable to bank		(2,454)	(7,463)
Repayments of long-term debt		0	(762)
Dividends paid		0	(258)
Net cash used in financing activities		0	(948)
Effect of exchange rate changes on cash		691	1,036
Net decrease in cash, cash equivalents, and restricted cash		(4,485)	(1,696)
Cash, cash equivalents, and restricted cash at beginning of period		47,675	31,178
Cash, cash equivalents, and restricted cash at end of period	[1]	$ 43,190	$ 29,482

[1] Restricted cash is held at various banks to collateralize outstanding letters of credit, which are held by customers as performance, bid, or pre-payment guarantees.