Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets :
Cash and cash equivalents	$ 20,073	$ 29,289
Trade and other accounts receivable, net of allowance for doubtful accounts of $341 and $577 at September 30, 2012 and December 31, 2011, respectively	52,998	36,131
Inventories	31,930	27,232
Prepaid expenses and other current assets	2,829	3,125
Total current assets	107,820	95,777
Property and equipment, net	35,806	28,541
Intangible assets, net	758	1,111
Goodwill	24,826	24,887
Pension asset	6,945	6,359
Other non-current assets	79	261
Total assets	176,234	156,936
Current liabilities:
Accounts payable and accrued liabilities	32,789	37,145
Accrued warranty	244	258
Accrued employee compensation	5,025	6,243
Short-term borrowings and current portion of long-term debt	6,909	5,431
Deferred tax liability	499	499
Total current liabilities	45,466	49,576
Deferred tax liability, long-term	962	933
Long-term debt, excluding current portion	2,960	68
Other long-term liabilities	699	3,028
Total liabilities	50,087	53,605
Commitments and contingencies (Note 10)
Stockholders' equity:
Common stock, $0.10 par value per share, 40,000 shares authorized; 29,183 and 28,174 shares issued and outstanding at September 30, 2012 and December 31, 2011, respectively	2,915	2,815
Additional paid-in capital	267,069	252,907
Accumulated deficit	(154,456)	(163,021)
Accumulated other comprehensive income	10,619	10,630
Total stockholders' equity	126,147	103,331
Total liabilities and stockholders' equity	$ 176,234	$ 156,936