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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
OPERATING ACTIVITIES      
Net loss $ (2,138) $ (6,209) $ (9,231)
Loss from discontinued operations, net of tax 3,702 17,377 4,026
Adjustments to reconcile net income (loss) from continuing operations to net cash provided by operating activities:      
Depreciation and amortization of financing fees 3,692 3,705 3,866
Amortization of intangible assets 627 817 944
(Gain) loss on long-lived asset disposal and write-offs 76 (217) 79
Foreign exchange (gain) loss (95) (124) 49
Gain on litigation settlement     (1,256)
Non-cash stock-based compensation 1,225 1,077 1,330
Changes in deferred income taxes 496 258 171
Provision for loss on accounts receivable 237 (216) 188
Provision for inventory obsolescence 1,537 387 1,123
Provision for warranty charges 591 602 436
Provision for workers' compensation obligation (217) (303) 170
Changes in operating assets and liabilities:      
Accounts receivable 14,081 (3,096) (125)
Inventories (5,453) 2,113 5,527
Income taxes receivable (220)    
Prepaid expenses and other current assets 232 (737) (99)
Insurance receivable relating to fires (1,730)    
Income taxes payable (43) 26 (554)
Accounts payable and other liabilities (5,677) (4,730) (4,829)
Net cash provided by operating activities from continuing operations 10,923 10,730 1,815
Net cash provided by operating activities from discontinued operations 39 179 217
Net cash provided by operating activities 10,962 10,909 2,032
INVESTING ACTIVITIES      
Purchase of property and equipment (2,362) (1,762) (1,820)
Proceeds from asset disposal 28 445  
Change in restricted cash 298 (464)  
Payment for acquired companies, net of cash acquired (50) (137) (6,766)
Net cash used in investing activities from continuing operations (2,086) (1,918) (8,586)
Net cash provided from (used in) investing activities from discontinued operations 87 (33) (215)
Net cash used in investing activities (1,999) (1,951) (8,801)
FINANCING ACTIVITIES      
Net change in revolving credit facilities (8,541) (6,959) 15,500
Proceeds from issuance of common stock 73 55 349
Proceeds from issuance of debt     751
Principal payments on debt and capital lease obligations (8) (3,574) (2,359)
Purchase of treasury stock     (3,326)
Short-swing profit recovery     6
Net cash used in financing activities from continuing operations (8,476) (10,478) 10,921
Net cash used in financing activities from discontinued operations (128) (151) (160)
Net cash used in financing activities (8,604) (10,629) 10,761
Effect of exchange rate changes on cash 320 218 224
Change in cash and cash equivalents 679 (1,453) 4,216
Cash and cash equivalents at beginning of period 4,641 6,094 1,878
Cash and cash equivalents at end of period 5,320 4,641 6,094
SUPPLEMENTAL CASH FLOW INFORMATION      
Cash paid for interest 413 845 1,289
Cash paid for income taxes 295 1 605
Noncash investing and financing activities:      
Issuance of common stock for acquired companies   858  
Purchase of property and equipment via capital lease payable   $ 303 $ 102